No doubt.
Is what it ACTUALLY says in the Bible is you "shall not bare false witness against thy neighbor,"
You'd really have to strech that to damn this guy. And is isn't that guy's damn right to damn anybody as far as I'm concerned. Let's leave that stuff up to God.
Plus, you've got the severe question of whether a guy holding a knife at your throat is your "neighbor". Lying to the devil or his authorized representatives, is morally OK by me.