Musannaf Ibn Abi Shayba 21:664

'Abdah ibn Sulayman narrated to us, from Muhammad ibn 'Amr, from Abu Salamah, who said: 'Abdullah ibn Salam said: The prayer over the funeral is that you say: "O Allah, forgive our living and our dead, our young and our old, our male and our female, those of us who are present and those who are absent. O Allah, whoever among us You take in death, take him in death upon faith, and whoever among us You keep alive, keep him alive upon Islam."