I got it! I saw this yesterday, and tried to figure it out, and it started bugging me. So I sat down and figured out what half the words were, then found the quote to match it. Is this it?
 
	Quote:
	
	
		| Depart, or not one of you will be spared. Not one will be left alive to take back tidings to the North. You do not know your peril. | 
	
 Said by Aragorn, the the Uruk-hai at Helm's Deep.