3 verses have
steadfast
in Edition Clear Qur'an by Talal Itani / Al-Anfaal (The Spoils of War)

8:46And obey God and His Messenger, and do not dispute, lest you falter and lose your courage. And be steadfast. God is with the steadfast.

8:65O prophet! Rouse the believers to battle. If there are twenty steadfast among you, they will defeat two hundred; and if there are a hundred of you, they will defeat a thousand of those who disbelieve; because they are a people who do not understand.

8:66God has now lightened your burden, knowing that there is weakness in you. If there are a hundred steadfast among you, they will defeat two hundred; and if there are a thousand of you, they will defeat two thousand by God’s leave. God is with the steadfast.