Not a whm main but do this fight quite often. Personally use shroud of saints on phases that soldiers pop when available. Tanks have a bit of trouble holding them sometimes since they are not doing dmg only enmity gain. Dreads I don't worry about short of being behind them hate wise. The tanks are hunting for these specifically for their high dmg potential. If one gets loose before the mt dies its on them. That said they hit hard out of the gate, keep that mt alive at all costs.