Prayer for Religious Vocations (by Pope Pius Xii)

O Lord Jesus Christ, sublime model of all perfection, Thou art ever urging onward all privileged souls in their high aspiration towards the goal of religious life; and, moreover, Thou dost also strengthen them through the powerful force of Thy example and the efficacious influence of Thy grace so that they may be able to follow Thee in such a noble way of life; grant then that many, recognizing Thy sweet inspirations, may have the will to correspond with them by embracing the religious state and so enjoy in it Thy special care and tender predilection.
Grant in like manner that there may never be wanting those angels of Thy charity, who will represent Thee day and night at the cradle of the orphan, at the bedside of the suffering, by the side of the aged and the sick, who perhaps have no one on earth to whom they may look for sympathy and a helping hand. Grant that humble schools, like lofty pulpits, may ever re-echo Thy voice, teaching the way to heaven and the duties proper to each one's state in life. May no land, ever so wild and remote, be deprived of the preaching of the Gospel, whereby the invitation is extended to all peoples to enter into Thy Kingdom. Increase and multiply the flames which are to spread throughout the world that fire in which the immaculate holiness of Thy Church is to shine forth in all its splendour. May there flourish in every place gardens of chosen souls who by contemplation and penance make reparation for the sins of men and invoke Thy mercy upon them. Grant that the continuous self sacrifice of these hearts, the snow-white purity of these souls and their eminent virtues may keep ever alive the perfect example of the children of God which Thou didst will to make manifest to men by Thy coming into this world.
To these armies of Thy dearly beloved souls send a large number of good vocations, souls steadfast and firm in their resolve to make themselves worthy of their high calling and to become a credit to the holy institute to which they aspire, by exact religious observance, by diligence in prayer, by constant mortification and by the perfect conformity of their will with Thine in all things.
Enlighten, O Lord Jesus, many generous souls with the fiery glow of the Holy Spirit, who is substantial and eternal love, and by the powerful intercession of Thy most dear Mother Mary, stir up and preserve in them the fire of Thy love, unto the glory of the Father and the same Holy Spirit, who together with Thee live and reign for ever and ever.
Amen.