maybe you should ask god that question, i dont think any of us can know that
If his adrenaline kicked in then he probably felt very little pain until he passed out but only those who have experienced NDE's know for certain what beyond that feels like.
An unconcious state is complete unawareness. Only WHILE passing out does one feel fear or pain. Once he was unconcious, he felt nothing.
No one can say for certain, some say that hearing is the last thing to go, if the heart has stopped, and no O2 in flowing round the body, then it's debatable whether the person feels fear or pain.