Originally posted by OneDumbG0
His Omega Effect got deflected by Superman's heat vision. And in that instance, he clearly called it "Omega Effect." In Superman/Batman #13, he commented that his "Omega Beams" would reduce Superman to less than ashes, which is consistent with the description of the Omega Effect. It's clearly been nerfed as time goes on, but someone else just mentioned that his Omega Effect got rerouted by Firestorm. I mean... I didn't read that comic... but yeesh.
I can't be sure but wasn't that feat explained as being Superman being protected by the Source? I can't remember, but I think there was some story about Superman being given some immunity from the OE by the Source or something along those lines, I'll confirm later. If that's not the case then the OE has certainly been retconned.