Which personal damage reductions make other raid members suffer more damage from Inferno Slicer?

When fighting Gruul in BRF, we noticed increased incoming damage from Inferno Slice when some people launch damage reducing/avoiding abilities, such as Divine Shield. We are unsure which abilities are safe to use. My guess is, that damage immunities will make the damage be split among others instead, like mentioned DS or Ice Block from Mages. But what about Deterrence and others such as Evanesce?