This is for the quest "Residue Rendezvous" the ICC weekly quest
Residue Rendezvous - Quest - World of Warcraft
I know both of these bosses are quite easy, but if you want to complete the quests in about 5-8 minutes here is what you do
1.) Have the Tanks tank him inside the door that closes as you go in, not in front of it, but INSIDE of it
2.) Wait for the quest buff to come out.
3.) After you get it, Let the tank die.
4.) Repeat on the opposite boss and you have yourself a completed ICC weekly
Pic for more Clarity. (epic paint skills)