books where fmc almost dies or goes through trauma and mmc takes care of her

Looking for recs where the fmc is preferably kinda shy and inexperienced and the mmc is morally grey and possessive of her and will kill anyone who hurts her. Want scenes where the fmc gets attacked/goes through trauma/ almost dies etc and he either has to watch or finds her and goes crazy. He helps her heal. No triggers at all - darker the better. Books i’ve read: No Saint by Ria Wilde