In this how to video, you will learn how to defeat Enki and Enlil in Final Fantasy XIII. You will need Final Fantasy XIII in order to do this. One of them is weak against water, and the other is weak against lightning. Cast deep protect on your guys first. If you want to fight them both at the same time, use slash and burn. Try to keep your health over 50 percent. Also, watch out for the bellow cast. Keep Vanille as a medic so that your health does not go down too far. If you fight them both at once and they are focused on one of your guys, wait until they cast raging tempest. This will cause damage to the other boss. This can help you defeat these bosses at the same time.