How did Prophet Moses and his followers respond to the oppression carried out by King Fir`awn?

Verses 127-129 of Chapter 7:
The chiefs of Fir`awn's people said: "Will you leave Musa and his people to spread mischief in the land, and to abandon you and your gods'' He said: "We will kill their sons, and let their women live, and we have indeed irresistible power over them.'' Musa said to his people: "Seek help in Allah and be patient. Verily, the earth is Allah's. He gives it as a heritage to whom He wills of His servants; and the (blessed) end is for the pious and righteous persons.'' They said: "We suffered troubles before you came to us, and since you have come to us.'' He said: "It may be that your Lord will destroy your enemy and make you successors on the earth, so that He may see how you act''