I was once immune to gorgons gaze. In the early days of vog. I was a 26 so I ran out of ammo killing them, and 1000 melee 20 grenades later. 2 of them were dead, and my team revived. It was stupid noob behavior as we didn't know how to get through gorgons. We thought it was part of the game for 1 person to save the team in order to get through.