O Jesus, Son of the living God, have mercy on us!
O Jesus, Son of the Virgin Mary, have mercy on us!
O Jesus, King and center of all hearts, grant that peace may be in Thy kingdom.

O Iesu, Fili Dei vivi, miserere nobis!
O Iesu, Fili Madre Virginis, miserere nobis!
O Iesu, rex et centrum omnium cordium, fac ut fiat pax in regno tuo.

An indulgence of 300 days when said conjointly.
Taken from “The Raccolta”, #82. Imprimatur, 1951.