i think 'I trust you with my life but not your own' as a trope is one of the ones that can always fuck me up no matter what
"I trust you with my life because you are good and kind and noble--I know you will not hesitate to do everything in your power to save me.
I do not trust you with your own life because you are good and kind and noble--I know you would not hesitate to sacrifice yourself to save me."
THAT is where it's at!!!!!