The following prayer, formerly indulgenced, was promulgated by Pope Pius VII in 1815 during a time of profound crisis for the West and for the Church. It would be especially appropriate for use during a Holy Hour, after receiving Holy Communion, or at any time that one hears of an outrage to the Most Holy Eucharist.
Jesus, my God, my Savior, true God and true Man, in that lowly homage with which the faith itself inspires me, with my whole heart I adore and love Thee in the most august Sacrament of the Altar, in reparation for all the acts of irreverence, profanation and sacrilege, which I myself may ever have been so unhappy as to have committed, as well as for all such like acts that ever have been done by others, or that may be done in ages yet to come. I adore Thee, my God, not indeed as Thou deservest, nor as much as I am bound to adore, but as far as I am able; and I would that I could adore Thee with all the perfection of which a reasonable creature is capable. Meantime I purpose now and ever to adore Thee, not only for those Catholics who adore and love Thee not, but also for the conversion of all bad Christians, and of all Heretics, Schismatics, Mohammedans, Jews and idolaters. Jesus, my God, mayest Thou be ever known, adored, loved and praised every moment, in the most holy and divine Sacrament. Amen.