O Jesus, our most loving Saviour! Thou Who was sent down from Heaven to enlighten the world by Thy teaching and example, and Who didst will to pass the greater part of Thy holy life in Nazareth, subject to Mary and Joseph, and thereby didst hallow the household which was to be the pattern for all Christian families, do Thou in Thy goodness receive our household which this day consecrates itself to Thee. Protect and guard us, strengthen us in Thy holy fear, establish in our hearts the peace and concord of Christian Charity, so that each one of us becoming like to the Divine model of Thy family, may be sharers of eternal joy.
O Mary, most loving Mother of Jesus Christ, our Mother, through thy love and mercy intercede, that Jesus receive this act of Consecration, and pour out upon us His graces and blessings.
O Joseph, most holy Guardian of Jesus and Mary, help us by thy prayers in all our necessities, both of body and soul; that together with the Blessed Virgin Mary and thyself we shall praise and thank Jesus Christ, our Divine Redeemer.
(Taken from The Purgatorian Manual)