For the fifth day of the Divine Mercy novena, Christ asked Saint Faustina to pray the following prayer for the sake of all those who, while Christians, have separated themselves from the Roman Catholic Church. She recorded the following words of Our Lord in her diary: "Today bring to Me the Souls of those who have separated themselves from My Church, and immerse them in the ocean of My mercy. During My bitter Passion they tore at My Body and Heart, that is, My Church. As they return to unity with the Church My wounds heal and in this way they alleviate My Passion."
Prayer for the Fifth Day of the Divine Mercy Novena
Most Merciful Jesus, Goodness Itself, You do not refuse light to those who seek it of You. Receive into the abode of Your Most Compassionate Heart the souls of those who have separated themselves from Your Church. Draw them by Your light into the unity of the Church, and do not let them escape from the abode of Your Most Compassionate Heart; but bring it about that they, too, come to glorify the generosity of Your mercy.
Eternal Father, turn Your merciful gaze upon the souls of those who have separated themselves from Your Son's Church, who have squandered Your blessings and misused Your graces by obstinately persisting in their errors. Do not look upon their errors, but upon the love of Your own Son and upon His bitter Passion, which He underwent for their sake, since they, too, are enclosed in His Most Compassionate Heart. Bring it about that they also may glorify Your great mercy for endless ages. Amen.