be in the shadow of
US /bi ɪn ðə ˈʃædoʊ əv/
UK /bi ɪn ðə ˈʃædoʊ əv/

1.
to be less successful or important than someone or something else
:
•
He always felt like he was in the shadow of his older, more successful brother.
•
The small town was always in the shadow of the bustling city nearby.