Groundpound immunity

[Lousy_Todah]

Hello friends, im working on an hostile mob that is able to do frequent groundpounds and summon other mobs to fight the player, but I've run into the issue where his groundpounds deal damage and aggro the other enemies that he just summoned, and as you can guess that's no good. Is there any way to make an entity immune to ground pounds? I've looked at the groundpounder.lua file but couldn't find anything, how could I solve this issue?
Thank you for your help.