Mori’s tali spec works for almost every physical boss in the game if you have the right amount of gear. Prot variant just feats stone skin instead of iron skin but requires lots of specific gear to pull off. If you really want the lazy mans tali spec that has stone skin and iron skin, this is what you’re looking for https://goo.gl/noNy21. It’s not as good as specialized specs but it’s not missing anything major.
I hate linking my dread specs because people tend to argue for Soul Barrier and Curse of Gwahlur - I don’t really have major arguments against Curse of Gwahlur but Soul Barrier is a terrible mana sink that won’t help you (unless you gear is bad).
A prot build is for magical bosses like, Zaal, Emperor, Thoth that only deal in magic damage.
There’s 2 dread prot specs and you use the one based on your itemization
IF You have the protection talisman for Wyrm, I’d use this - https://goo.gl/rheF3Q
If you don’t, and you’re using a shield, I’d use this - https://goo.gl/AVvQ3q
Physical max mitigation spec is the same sort of idea as the shield spec, you just swap the points from iron skin to stone skin and invulnerable soul to solid pestilence (and you run covenant of pestilence, it’s really nice since it was buffed and something not many people use).