One which I know is when Khalid Bin Waleed RA meets an army leader in a battlefield and asks him, "Who are you?" The man replies, "Don't you know who I am? I am Israel, Destroyer of the Persians (and so on). "I am named after the Angel of Death". To which Khalid Bin Waleed replies, "Well, you are soon to meet the one you are named after" and then kills him in duel.