Okay, you're looking for a biblical head of the household.
You don't need someone who runs into harms way to find that. And you'd be surprised how tough some guys can be. Although not a lot of them apparently - I think churches have a nasty habit of turning out neutered guys who make Christianity look boring.
When you say you're looking for a dominant man, that's a different personality entirely than you're describing here. I work in a field filled with driven men who know exactly what they want and how to get it. Not all of them are dominant, and out of the ones that are, many of them are probably the ones I would be least interested in dating (let alone marrying) were I a woman.
Find a guy who's himself, and make sure he's actually a Christian. A guy like that is more than capable of dragging others across the finish line when need be, and is a lot more fun to be around when the situation doesn't call for being as serious as a heart attack. Heck, I know of more than a few guys who meet those criteria who are also quite capable of physically defending a woman against attack. Though most of them are on CC - not a lot of guys my age in my church. Not a lot of guys period - I see a lot of women with their kids and no man accompanying them.
If a guy doesn't go to church on his own... that's probably a deal breaker.