Theft of (someone's) thunder

Translation theft of (someone's) thunder into russian

She accused him of the theft of her thunder when he presented her idea as his own.

Она обвинила его в присвоении её заслуг, когда он представил её идею как свою.

The act of taking credit for someone else's idea, achievement, or success, often overshadowing or diminishing the original person's contribution.