The source of life, O Lady, who gave birth to the Savior of the world, Jesus the Lord, diligently pray to the endless life of Your servant, who has now passed away: for You are the only Christian You are the most famous Helper.
Lord, have mercy (12 times). And this prayer:
Remember, O Lord our God, in the faith and hope of the life of your eternal departed servant, our brother (name), and as you are Good and Lover of Mankind, you forgive sins and consume untruths, weaken, forgive and forgive all his voluntary and involuntary sins, deliver him from eternal torment and the fire of Gehenna, and grant him the communion and pleasure of Your eternal good things, prepared for those who love You: even if you sin, do not depart from You, and undoubtedly in the Father and the Son and the Holy Spirit, God glorify You in the Trinity, faith, and the Unity in the Trinity and the Trinity in Unity, Orthodox even before his last breath of confession.
Moreover, be merciful to him, and to place faith in You instead of works, and with Your saints for Your generous rest: for there is no man who will live and not sin. But You are the One besides all sin, and Your righteousness is righteousness forever, and You are the One God of mercies and generosity and love for mankind, and to You we send glory, to the Father and the Son and the Holy Spirit, now and forever and to the ages of ages.
(This prayer is also read after each Glory during the subsequent reading of the Psalter).
Source: Orthodox prayer book with the appendix of prayers to the Most Holy Theotokos and the saints of God. - M.: Publishing house of the Moscow Patriarchate of the Russian Orthodox Church, 2018. - 816 p.