First, I'd really like to know why YOU are asking the question and what religious belief you have that could interfere with providing patient care?
Second, the name of our game is to protect and preserve life, and if there's a chance within our abilities to restore it, then that's what we do. Period. ANYTHING whatsoever, philosophically or spiritually, politically or socially, personally or tribally that interferes with taking action to those ends means "GET OUT!"
(That means saving the lives of killers, rapists, child molesters, and even Osama Bin Laden if that's the call you're sent to.)
...AND, if you're at this long enough you're bound to experience just such conflicts of conscience, most likely from a hot-button you weren't even aware of. If and when, do the work to your best ability, and then AFTER the call take a real good look if that might interfere in the future. If so -- and there's no shame here -- follow your beliefs, but not in the back of an ambulance.