This prayer written by Pope Leo XIII is recited in the SSPX's houses after the rosary.
To thee, O blessed Joseph, do we come in our tribulation, and having implored the help of thy most holy Spouse, we confidently invoke thy patronage also. Through that charity which bound thee to the immaculate Virgin Mother of God and through the paternal love with which thou embraced the Child Jesus, we humbly beg thee to graciously regard the inheritance which Jesus Christ has purchased by his Blood, and with thy power and strength to aid us in our necessities.
O most watchful Guardian of the Holy Family, defend the chosen children of Jesus Christ; O most loving father, ward off from us every contagion of error and corrupting influence; O our most mighty protector, be propitious to us and from heaven assist us in our struggle with the power of darkness; and, as once thou rescued the Child Jesus from deadly peril, so now protect God's Holy Church from the snares of the enemy and from all adversity; shield, too, each one of us by thy constant protection, so that, supported by thy example and thy aid, we may be able to live piously, to die holy, and to obtain eternal happiness in heaven. Amen.
Ad te beate Joseph, in tribulatione nostra confugimus, atque, implorato Sponsae tuae sanctissimae auxilio, patrocinium quoque tuum fidenter exposcimus. Per eam, quaesumus quae te cum immaculata Virgine Dei Genetrice conjunxit, caritatem, perque paternum, quo Puerum Jesum amplexus es, amorem, supplices deprecamur, ut ad hereditatem, quam Jesus Christus acquisivit Sanguine suo, benignus respicias, ac necessitatibus nostris tua virtute et ope succurras.
Tuere, o Custos providentissime divinae Familiae, Jesu Christi subolem electam; prohibe a nobis, amantissime Pater, omnem errorum ac corruptelarum luem; propitius nobis, sospitator noster fortissime, in hoc cum potestate tenebrarum certamine e caelo adesto; et sicut olim Puerum Jesum e summo eripuisti vitae discrimine, ita nunc Ecclesiam sanctam Dei ab hostilibus insidiis atque ab omni adversitate defende: nosque singulos perpetuo tege patrocinio, ut ad tui exemplar et ope tua suffulti, sancte vivere, pie emori, sempiternamque in caelis beatitudinem assequi possimus. Amen.