Shannox is np as prot, even though we scale a lot more with gear right now.
Rhyolith should be doable. Just don't let him run into the lava.
Bethtilac could be tricky. But I triggered P2 too early. 15% at 0 energy is doable with worse gear.
Alysrazor 25hc should die before p2 even with 550 gear.
Baleroc is the only heavy RNG encounter and you might get 3 blade phases. Decimation can be managed with DBTS glyph. If you get Deci - Inf - Deci it should be ready again with Gala trinket.
Majordomo has always been a joke.
Rag has lots of fault tolerance and should be doable even with only hc gear. The DoT is never a problem and if you nuke him in P3 you shouldn't get a meteor with way worse gear.
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Thunderclap spam with range glyph? is available for all specs.