User blog:CNBA3/Null Zone Beam

Null Zone Beam
So after playing the mission on Starcraft 2 Heart of the Swarm called "Phantoms of the Void", Narud the Shapeshifter had fired a Null Zone at Kerrigan which would have "killed" her on contact, I have been searching for what the Null Zone is but could not find it. Anyone with information please post!