play second fiddle

Translations
играть вторую скрипку
He was tired of playing second fiddle to his brother.
Он устал играть вторую скрипку своему брату.
Definitions
To play a subordinate role to someone else, often in a situation where one is not the main focus or leader.
Words
play

verb
играть
second

adjective
вторую
fiddle

noun
скрипку