Musannaf Ibn Abi Shaybah 12053 — Reports on what is said when

Khaythamah said: When they (the Companions) placed the deceased in the grave, they liked that it be said: 'Bismillahi wa fi sabilillahi wa 'ala millati Rasulillah, Allahumma ajirhu min 'adhabi al-qabri wa 'adhabi al-nari wa min sharri al-shaytan' (In the name of Allah, in the path of Allah, and upon the religion of the Messenger of Allah. O Allah, protect him from the punishment of the grave, from the punishment of the Fire, and from the evil of Satan).