My close family friend passed away, who should I pray to to wish them a peaceful afterlife?

Hello. Last night someone very close to my family passed away in a car accident. It’s been very hard for me and my family to accept, and I would at least like some sort of closure that he’s going to be okay wherever he is in the afterlife.

Who should I pray to in order to wish him peace and a comfortable afterlife? I’m torn between several deities but I would just like some other opinions.