Attack resisted?

I had it on 2 occasions, that attacking an enemy (2 Chirons), that I dealt damage by shooting at the Chiron, but in the same time next to the enemy a message appeared, that something about the attack was “resisted” or “repelled”.

What might that be?

(Sorry, if I took the wrong syntax, since I play the game in german language; On german text it is written: “Widerstanden”).

Off the top of my head Chiron are immune to daze.

What weapon you have used?

I used the Heavy`s Hel-Cannon.

But yes, it was dazed, that was prevented.