How to survive big physical hits on Warrior? How to facetank physical endgame bosses?

[RawMeatDiet]

Since armour is useless for this and I reached endgame I need a way to not get oneshot by Silverfist in maps, and facetank rares that do heavy physical dmg.

Any suggestions for how to facetank Silverfist's strongest slam in maps? Is it reasonable for a Warrior to go Mind over Matter and get a lot of mana or is that unrealistic if you want to have a lot of STR?

There's only 2 uniques that I've seen that affect physical damage mitigation:

* Hollow Mask. (15% additional physical damage reduction.)
-This barely does anything and won't decrease the incoming damage by a lot.

* Cloak of Flame. (40% of physical damage taken as fire damage.) -Didn't test this item, could be good but still not enough in high tier maps to survive Silverfist comfortably I feel. Also, it has low armour... Why did they give physical mitigation to a caster armour? So casters are naturally tankier than melee? How does that make sense?

There's also physical mitigation that can roll on a shield, but it's not much.

What else I can do to mitigate physical damage on a warrior? Let's assume 2-3k HP build.

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If it's not possible to comfortably tank as a melee then I will have to skip Silverfist in maps and any other dangerous physical encounters...