Как по Английски будет prendre le dessus

noun

If you have the upper hand, you have more power than anyone else and so have control

Примеры использования:

After hours of fierce negotiations, the president gained/got/had the upper hand.

idiom

To make something unpleasant have less of an effect on someone

Примеры использования:

Have an apple - it'll take the edge off your hunger., his apology took the edge off her anger.