Preserve thy family, O Lord, we beseech thee, by thy constant mercy; that, under Thy protection, it may be freed from all adversities, and be devoted to thy name in the practice of good works. (Collect from the 21st Sunday after Pentecost)
Devotion is possible only through the protection of God, because we are fighting against principalities and powers and the whole host of the fallen angels who are conspiring to steal our peace and prevent us from doing good works to the greater glory of God. Let us pray that God will protect us, so that we may preserve (and even increase) our zeal for His honor, and His name, and His Presence in the Blessed Sacrament. May God send his archangel Michael to put to flight the demons who would destroy our peace.
St. Michael the archangel, pray for us.