There is a zombie movie called DAWN OF THE DEAD from year 2004 ! I remember there is a suspenseful scene at beginning of movie where she tries to get away ! Then later there is a man who is stranded in a different location and a kind man on a rooftop in binoculars looking out for him ! He sees all the zombies coming after him ! , and he try to help ! I can’t remember if the guy got eaten by zombie but even if he got bitten at least he had a true friend before the end!