Hidden stat of the repulsator

Everytime i use the repulsator (as an energy mech) i notice resistance to the resistant to energy goes way up. I hit a mech with 65 energy (i had energy broken him once) and i took 128 damage. I noticed everytime before that that whenever i shot a mech with it, i magically took less damage the next shot. Is this a thing? Trying to figure out whats up. I think it causes a dramatic increase in at least energy resistance. If not heat too. Right? Has anyone else experienced this anomaly?

I do not but I will try it in the pvp although they remove stars but it is very interesting so I am going to try

I should say i used a 37 myth malice beam and minimum damage was 130.