Source Temple Sentinel statues

[Aequil10]

So I am just past the earth door in the temple and I have come to these guys. And I just don't know how to get past them. I can't seem to sneak, since their line of sight sees me anywhen when it turns since the cone is always outwards in the hallway. I was pleasantly surprised when I noticed the lava actually healing my fighter though, but I suppose that's got to do with the 130 fire resistance. Then I felt a little cheated. I wanted to know how exactly I would have done it without the resistance.

Same thing with the previous room, where you are in a room with lava and the middle of it is separated with iron bars. I got to the other side thanks to teleport, but how would I have managed to do that without that skill? What alternative is there?

[I Have Moose]

I just turn invisible to get past any sentry, hm, didn't know excess resistence meant healing, thanks