I was playing Nader on Chapel in a ranked match and was downed next to the EV. When an enemy came close, i used my martyrdom to kill him but i damaged the EV too. The point is, i was awarded bonus xp (the one which is written in yellow, can’t remember the name) for damaging the EV while my mission was to escort it.
Didn’t test it for other ability that could damage the EV.