One day, Saint Michael, Prince of Angels, appeared to a devout servant of God named Antonia d' Astonac. Saint Michael went on to promise that anyone who prayed this devotion in his honor would have, when approaching the Holy Altar to receive the Eucharist, an escort of nine angels chosen by himself from each of the nine choirs of angels. In addition, he promised that anyone who recited this devotion daily would be given during his life Prince Michael's own protection as well as the continual assistance of all of God's holy angels. Furthermore, after death, such a one will obtain for himself and his relations deliverance from purgatory. O Lord, make haste to help me.
Glory be, etc.
On the Guardian Angel Medal I say an additional Our Father for my personal Guardian Angel whose name I do not know. Prayer Almighty and Everlasting God, who by a prodigy of goodness and a merciful desire for the salvation of all men, hast appointed the most glorious Archangel, Saint Michael, Prince of Thy Church, make us worthy, we beseech Thee, to be delivered from all our enemies, that none of them may harass us at the hour of death, but that we may be conducted by him into the august presence of Thy Divine Majesty. This we beg through the merits of Jesus Christ our Lord. OR Saint Michael, the Archangel, defend us in battle, be our protection against the malice and snares of the devil. We humbly beseech God to command him, and do thou, O prince of the heavenly host, by the divine power thrust into hell Satan and the other evil spirits who roam through the world seeking the ruin of souls.