Many prayers below are from the 1910 Edition of The Raccolta, or Collection of Indulgenced Prayers & Good Works by Ambrose St. John of the Oratory of St Philip Neri, Birmingham which can be downloaded here.
Prayer to Blessed Aloysius
O BLESSED Aloysius, adorned with angelic virtues, I, thy most unworthy suppliant, recommend specially to thee the chastity of my soul and body, praying thee by thy angelic purity to plead for me with JESUS CHRIST, the Immaculate Lamb, and his most Holy Mother, Virgin of virgins, that they would vouchsafe to keep me from all grievous sin. Never suffer me to be denied with any stain of fleshly sin; but when thou dost see me in temptation, or in danger of falling, then remove far from my mind all bad thoughts and unclean desires, and awaken in me the memory of eternity to come and of JESUS crucified ; impress deeply in my heart a sense of the holy fear of GOD; and, kindling in me the fire of divine love, enable me so to follow thy footsteps here on earth that in heaven I may be made worthy to enjoy with thee the vision of our GOD for ever. Amen. Our Father, Hail Mary
Prayer for Victory in Temptations, especially those against Chastity (Latin)
O DOMINA mea! O Mater mea! Tibi me totum offero, atque ut me tibi probem devotum, consecro tibi hodie oculos meos, aures meas, os meum, cor meum, plane me totum. Quoniam ita que tuus sum, O bona Mater, serva me, defende me, ut rem ac possessionem tuam. O My Queen! my Mother! I give thee all myself, and, to show my devotion to thee, I consecrate to thee this day my eyes, ears, mouth, heart, my entire self. Wherefore, O loving Mother, as I am thy own, keep me, defend me, as thy property and possession.
Prayer for the Preservation of Chastity (English)
LORD JESUS CHRIST, bridegroom of my soul, the beloved of my heart, nay, my very heart and soul, I throw myself upon my knees in Thy sight, and most earnestly implore Thee to give me the grace to keep the faith I solemnly professed through my baptism. I renew these promises at Easter and every time I recite the Creed. Wherefore, O sweetest Jesus, let me deny all ungodliness; let me ever be a stranger to illicit carnal desires and earthly lusts which war against my soul, and with Thy help, let me preserve my chastity as my state in life requires.
O Mary most holy and immaculate, the Virgin of virgins, and our loving Mother, make clean my heart and my soul ever more and more; obtain for me the fear of the LORD and a great distrust of myself.
St. Joseph, guardian of Mary’s virginity, keep my soul free from every sin.
All ye holy virgins who follow the Lamb whithersoever He goeth, be ever watchful over me a sinner, lest at any time I go astray from the most pure Heart of Jesus and transgress by thought, word, or deed. Amen.
Prayer for the Preservation of Chastity (Latin)
DOMINE JESU CHRISTE, sponse animæ meæ, deliciæ cordis mei, imo cor meum et anima mea, ante conspectum tuum genibus me provolvo, et maximo animi ardore te oro et obtestor, ut mihi des servare fidem a me tibi solemniter datam in receptione Subdiaconatus. Ideo O dulcissime JESU, abnegem omnem impietatem, sim semper alienus a carnalibus desideriis et terrenis concupiscentiis, quæ militant adversus animam, et castitatem te adjuvante intemerate servem.
O sanctissima et immaculata Maria, Virgo Virginum et Mater nostra amantissima, munda in dies cor meum et animam meam, impetra mihi timorem DOMINI et singrilarem mei diffidentiam.
Sancte Joseph, custos Virginitatis Mariæ, custodi animam meam ab omni peccato.
Omnes sanctæ Virgines divinum Agnum quocunque sequentes, estote mei peccatoris semper sollicitæ, ne cogitatione, verbo aut opere delinquam et a castissimo Corde JESU unquam discedam. Amen.
Prayer to St. Joseph
To thee, O blessed Joseph, do we have recourse in our tribulation, and, having implored the help of thy most holy Spouse, we confidently invoke thy patronage also. By that charity wherewith thou was united to the Immaculate Virgin Mother of God, and by that fatherly affection with which thou didst embrace the Child Jesus, we beseech thee and we humbly pray, that thou wouldst look graciously upon the inheritance which Jesus Christ hath purchased by His Blood, and assist us in our needs by thy power and strength. Most watchful guardian of the Holy Family, protect the chosen people of Jesus Christ; keep far from us, most loving father, all blight of error and corruption; mercifully assist us from Heaven, most mighty defender, in this our conflict with the powers of darkness; and, even as of old thou didst rescue the Child Jesus from the supreme peril of His life, so now defend God’s Holy Church from the snares of the enemy and from all adversity; keep us one and all under thy continual protection, that we may be supported by thine example and thine assistance, may be enabled to lead a holy life, die a happy death, and come at last to the possession of everlasting blessedness in Heaven. Amen.