"The damage is not affected by AC."

[HardboiledGargoyle]

From the description for damnation:

These unholy forces harm the victim and anyone adjacent, and are not affected by any means of protection, such as armour or resistances. However, certain creatures...are entire unscathed by damnation.

Given its new name, there is no necessity to mention that it bypasses resistances, since there's no reason to suspect that it checks rF. The description only mentions bypassing AC, assuming that the reader conflates armour=AC. But it's a little silly to single out Hellfire/Damnation as THE ONE EFFECT against which there is no protection, and there actually is player-available protection in the form of DD/Fortitude damage shaving. There is a good number of spells, statuses, brands, and attack flavors that completely ignore AC. Appending "AC does not reduce this damage." to every such effect would go a long way to establish clarity and reduce the need for spoilers. By omission, this would additionally let players know that other effects do check AC.

There are a few fuzzy areas which do not fully fit the AC-ignoring label, but many more that are crystal-clear and important.

This note can even be appended to Sublimation of Blood, just to drive home how few things check AC.

"The damage is only partially affected by AC." or "AC is half as effective in reducing this damage." could be used for lightning and whatnot, but it's not nearly as important.

Would this be acceptable?

[Shard1697]

Given its new name, there is no necessity to mention that it bypasses resistances, since there's no reason to suspect that it checks rF.

I have not seen it happen(like I have with Hellfire/rF), but to be entirely fair I could imagine someone thinking that maybe it checks rN.

[and into]

From the description for damnation:

These unholy forces harm the victim and anyone adjacent, and are not affected by any means of protection, such as armour or resistances. However, certain creatures...are entire unscathed by damnation.

Given its new name, there is no necessity to mention that it bypasses resistances, since there's no reason to suspect that it checks rF.

Only part I slightly disagree with in the OP. I think it is fine to specify that *no* resistances (rF, rN, etc.) will protect you from damnation (/hellblast/brimstone/whatever it ends up being called). Erring a bit on the side of complete clarity seems fine here, considering damnation is a very deadly attack that is common in a few specific optional areas of the game, yet is very rare outside of those areas.

[PowerOfKaishin]

Doesn't rHellfire/rDamnation still protect 100% from regular fire damage?

[genericpseudonym]

Doesn't rHellfire/rDamnation still protect 100% from regular fire damage?

Not any more. it used to be that "rHellfire" was represented by 4 pips of fire resistance, but at some point it was moved to its own flag.