get your own back
US /ɡɛt jʊər oʊn bæk/
UK /ɡɛt jʊər oʊn bæk/

1.
se vingar, dar o troco
to take revenge on someone for something they have done to you
:
•
After he tricked me, I decided to get my own back by playing a prank on him.
Depois que ele me enganou, decidi me vingar pregando uma peça nele.
•
She was determined to get her own back on her rival.
Ela estava determinada a se vingar de sua rival.