help, assist
佑 centers on providing support or aid to someone: helping or assisting another person.
佑 combines 亻 (person) with 右, which likely contributes both sound and the idea of a right-hand helper or supporter.
A person 亻 standing by your right 右 side is someone ready to help and assist you.
For ユウ, imagine a helpful person saying 'you' when offering assistance: you -> ユウ, and that person is the helper on your right.