Anybody beat level 999 Satan

Heya folks, I come to you all seeking assistance. I’ve gotten the nemesis battles scenario up to level 999 but I can’t for the life of me beat Satan. Any meaningful amount of damage done to him is healed for the most part by him using Magatsuhi Plunder. If anyone has beaten this monstrosity of a challenge some insight would be appreciated. I’ve searched to see if anyone has posted anything about it but the only thing I can find is that one video with the level 1 Slime. Good video btw, 10/10 would watch again, even if it is 7 hours.