Anubis Escape

Today is mummification ceremony, a priest with the mask of Anubis has to do some rituals in the ceremony, but someone pushed him inside a room and locked him there.It's time for the ceremony. He has to participate with other priests, but the person who locked him had set up a difficult puzzle for the door to open.He thinks that he is intelligent.Prove that he is wrong. Find the clues and solve the puzzle to free Anubis.