@MelonHead just an update of sorts. I've nearly finished with the update to Szayeis' abilities.
I took a look at Judgement by the way. I think they might be a fairly decent match up as his "divine" ability to basically screw with "evil people," in addition to disrupting other magics would likely be fairly effective against Szayeis, who is a magic-heavy character.
Although I should tell you one thing in particular. Due to the magic resistant/disrupting abilities of Judgement being very similar to a type of spell in the verse that Szayeis comes from (known as Despells), that effect is unlikely to do much if he enters either his Origin State (I'd been meaning to write this up and it's what I'm working on at the moment) or his Shattered Path, though the latter will be
somewhat/slightly dampened most likely.
If you're wondering as to the general power level of Szayeis.... Basically speaking, Szayeis is probably at the TOP of the Powered tier, very nearly pushing into the "God," category. In his verse a demonic lord level demon is capable of using all of their energy to create what amounts to enough power to level a city. Think a nuke.
Szayeis has either that much energy (referred to as Essence in his verse) or twice that amount. For the purpose of keeping the two at the same level, you can choose between a few options.
Either he'll not have his Shattered Path and he'll only have the normal amount of essence for a demonic lord. Or he'll have twice that amount and both his Origin State and Shattered Path.
Granted, if I were you, I'd wait till I finish his Origin State to make that decision ^^;