Im currently praying for the respose of his soul. Make sure, to call a priest or other religious to give him last rites. If he had already passed, and his body is still where you can see it, call a priest or religious anyway to come to your house and pray with you and your family. God Bless!
Eternal rest grant unto him, O Lord
And may perpetual light shine upon him
May he rest in peace, Amen.
May his soul and all the souls of the faithful departed, through the mercy of God, rest in peace. Amen.
Father Ty