Here's how I imagine a battle between unprepped Jesus with morals off vs unprepped Superman with morals off:

Superman is patrolling and spots what he believes to be a powerful invader, he attacks instantly.
Jesus, due to his connection with god the father and the holy Spirit, is informed of the attack before it can connect. Jesus blesses all the air within a 20 foot radius and it makes superman come to a dead stop no matter how hard he tried to get closer.
Superman immediately fires his heat vision directly into Jesus's eyes, and Jesus is blinded momentarily before the lord blesses his eyes and heals them while also preventing any further damage. Jesus then preaches the word of god to Superman, and Superman converts and the battle is over. /story