Judaism  - "what is hateful to you, do not to your neighbour".

Christianity  - "do for others what you want them to do for you".

Buddhism - "treat not others in ways that you yourself would find hurtful". 

Hinduism  - "this is the sum of duty; do not to others what would cause pain if done to you".

Islam - "not one of you truly believes until you wish for others what you wish for yourselves".