Once the Prophet (Peace and blessings be upon him) was sitting with his Companions, and one person used insulting words against Abu Bakr causing him pain. But Abu Bakr remained silent. The person again used bitter words against Abu Bakr, and still Abu Bakr did not respond. The third time when this ignorant person hurt Abu Bakr with his tongue, Abu Bakr tried answeringback. At this point the Prophet (Peace and blessings be upon him) got up.
Abu Bakr asked him, "Are you displeased with me, O Messenger of Allah?"
The Prophet (Peace and blessings be upon him) replied, "No, but (when you remained silent) an angel came down from the heaven responding to this man's talk. But the moment you started replying to that man, the angel went away and the devil sat down. And I cannot sit where the devil is sitting." [Abu Dawud]
InshALLAH at times we want to be the person that says the last word in an argument but let's keep quiet inshALLAH and let an angel talk for us :) Aameen