“Steal the show” implies that someone or something unexpectedly or remarkably attracts the most attention and admiration in a situation where others are also present and performing. It can apply to a person, an idea, or even an object. 

Synonyms: steal the spotlight, outshine, excel, dominate, overshadow, take the cake, attract the most attention, put others in the shade.

For example:

Her performance in the play was so captivating that she stole the show. 

Despite all the other attractions, the new experimental car really stole the show at the motor show. 

Despite being a supporting character, his performance stole the show, earning him rave reviews. 

He stole the show against his old club with a standout performance.

Tradução: roubar a cena, o show, a atenção.