I'd like to hear from the Development team why two abilities for Marauders do not work during the Dread Guard Nightmare mode Lightning explosion but snipers can roll and be "immune" to a mechanic negating everything as well as Sorc's Barrier. (granted, they can only barrier one of the explosions... but they can then save the next cd for when they have doom).
Fyi, undying rage does not provide immunity. It provides 99% damage reduction, if you are doomed, 1% of dooms damage will still kill you. As for camaflogue, as far as I know it cuts all incoming damage by 50% for the entire duration. I am not sure why it would not cut lightning damage by 50%. Are you sure that it doesn't?