What can Protectorate do to counter Epic Haley's Feat?
It is incredibly obvious when this feat will be used. In competitive games it will most likely be turn 2 if the Cygnar player went first, or MAYBE turn 1 if you went first, so plan for it and know that your second turn will be spent largly doing nothing. Play that turn defensively, cast defensive spells and back up, or duck into terrain. Depending on your caster, you might be able to hide a significant portion of your force only to have it bust out of the trees the next round and deal maximum damage. Just don't let the Haley player bog you down. Insist that he pick which models activate in what order in a very timely fashion so that you can end your turn and be on to the next quickly.
If you make the Cygnar army unable to see your army he can't really capitalize on knowing that your next turn is going to be rubbish.