The other day i had a discussion with a player about this thing that made a lot of doubts arise.
If I read it well, it states that "if a psychic power affects the bearer or his unit, the power will be dispelled on a roll of 5+". More or less.
Now let's say a unit of Grey Knights inflicts a wound to the bearer or the unit in melee and then activate their nemesis force weapons successfully. Does that count as a power that affects the unit?.
Now lets say a Space Marine Librarian activates its nullifying zone, but the the bearer has not any invulnerable save and neither does his unit. Does that count as a power that affects the unit?.
Now lets say a Genestealer Patriarch activates its -1 Leadership aura when he is more than 12` away and, in the next turn, the bearer or his unit enters within the aura. Can the power be nullified the turn after it was activated?.