a plăti (cuiva) cu aceeaşi monedă

to do / to requite / to return like for like

to give return

to pay smb. (back) in his own coin

to give tit for tat / a Roland for an Oliver

to give as good as one gets

to return (smb.) as good as he sent

to give smb. a dose of his own medicine

to get back (at smb.)

to serve (smb.) with the same sauce

to pay back / to return / to repay / to answer in kind

to get upsides with smb.

to reciprocate

to retaliate (on smb.).