What is the ruling on saying "Sufficient for me is Allah and the Prophet" to every oppressor and aggressor?

"Al-hasbu" means sufficiency, and when a Muslim says, "Hasbi Allah," it means "Allah is sufficient for me," i.e., Allah will protect me from evil. "Al-hasbu" in this sense is an exclusive attribute of Allah Almighty. Therefore, a Muslim must single out Allah with it, as Allah Almighty said: "And if only they had been satisfied with what Allah and His Messenger gave them and said, 'Sufficient for us is Allah…'" And He said: "O Prophet, sufficient for you is Allah and for whoever follows you of the believers." And as He informed about the Companions: "Those to whom people said, 'Indeed, the people have gathered against you, so fear them.' But it increased them in faith, and they said, 'Sufficient for us is Allah, and [He is] the best Disposer of affairs.'"