to get back at … حق کسی را کف دستش گذاشتن

meaning: to punish someone who did something to you

Example: I think John is trying to GET BACK AT Hank for what he said in the meeting.

به نظرم جان می خواد حق هنک رو بخاطر چیزی که توی جلسه گفت کف دستش بذاره.