no. not on a conscience level. the first reply was asking about throwing yourself in front of a gun. this action is, in small way, beneficial to you. it increases your social standing with the person who's life you just saved. they now see you as brave, altruistic. also, if you just stood there, then you are actually hurt in the way that you cant forgive yourself for standing by and letting another human being die.
Something like that happened to me, a few years ago.
I agreed to exist
near the food n drink of a hospitality room
of a Convention from 12m - 2AM, after which, I'd awaken the guy
whose main responsibility was the food n drink.
( I 'd be his temporary assistant, at his request. )
I was intermittently reading n falling asleep.
He laid down on the rug n fashioned a pillow.
That was the last that I saw him alive.
, it never occurred to me
to "forgive myself" nor to feel any guilt.