The situation is as follows, it's the SOD version. I attacked a hero with Phoenixes using a hero with an Orb of Vulnerability. As a result, he wiped out all my units with Armageddon, but it didn't affect the Phoenixes. The physics manual states: Armageddon. If this spell is cast by the artifact's wielder, it affects everyone. If its opponent casts it, it affects all enemies and only those of its own troops that it would affect even without the Orb. So, I understand that it doesn't matter if I have the Orb or not, Phoenixes are immune to Armageddon, right? And how does it work in WoG?
Everything is written correctly in the physics manual. There's a bug-feature like this. If you had cast Armageddon, his Phoenixes would have died. The same applies to the resistance skill. It's exactly the same in WoG. The mechanics of artifacts haven't been changed (unless it's boots or gloves).