The English description of the card is as follows:
Apply a Ragh Nar Roog Hazard to all opposing rows.
Ragh Nar Roog Hazard: Every turn, at the start of your turn, Damage the Highest Unit on the row by 2.
This means the card only damages an enemy unit on the opponent's turn and only if it isn't protected by shield or Quen. Because you haven't described the situation, I cannot say what happened.