give the devil his due
US /ɡɪv ðə ˈdɛvəl hɪz duː/
UK /ɡɪv ðə ˈdɛvəl hɪz duː/

1.
悪魔にもその分を認める, 嫌いな相手でも良い点を認める
to admit that even a bad or disliked person has some good qualities or has done something good
:
•
I don't like my boss, but to give the devil his due, he's very fair with promotions.
上司は好きじゃないけど、悪魔にもその分を認めると、昇進に関してはとても公平だ。
•
Even though he's our rival, we have to give the devil his due; his team played exceptionally well.
彼はライバルだけど、悪魔にもその分を認めると、彼のチームは並外れてよくやった。