From what I am reading, there may have been a mistake in the translation for the English tooltip for Foes Req...and the difference between the Japanese text and the English text is fairly significant. I am looking for clarification on this.

The English text has Foes applying a reduction to damage dealt by enemies, where as the Japanese text (according to Reddit referencing an article published by Famitsu) that Foes actually increases damage FROM party TO enemy by 3% (or something to that affect).

Here are the tooltips for comparison, I cannot translate the Japanese text so this is based purely from others who have.