Aida , Amonasro and the captured Ethiopians all plead with the Egyptian King to save them , but the Egyptians want them to be put to death . Radames pleads with the king to spare Aida and Amonasro . Aida , Amonasro and the captured Ethiopians plead with the Egyptian King for mercy , but the Egyptians call for their death ( Aida , Amneris , Radames , The King , Amonasro , chorus : Che veggo ! . .