She grew up 'in the shadow of' her very popular sister. [=people did not notice her because of all the attention that was given to her sister]
He couldn't escape his father's 'shadow'. [=he couldn't escape the influence of his powerful/successful father]
a town located in the 'shadow' of the Rocky Mountains [=a town located very close to the Rocky Mountains]
(..) MARCUS: No, I'm guilty. Just cut me up until there's nothing left. PRIEST: Yea, though I walk through the valley of the shadow of death... ...I will fear no evil, for thou art with me. Thy rod and thy staff, they comfort me. WARDEN: (..)2009 Terminator Salvation