on his side
You always stay by his side.
Você sempre fica do lado dele.
You always stay by his side.
Talvez o destino agora esteja do lado dele.
Perhaps fate is on his side now.
— Corra, Milkha, Corra (2013)
Mostra que você está do lado dele.
Show him that you're on his side.
— A Queda! As Últimas Horas de Hitler (2004)
Obviamente ele é seu amigo, você ficará do lado dele.
Obviously, he's your friend, so you'll take his side.
— Piku (2015)
Por que você ficou do lado dele ao invés do meu?
Why did you side with him instead of me?