4 verses have
“sufficient”
in Edition Clear Qur'an by Talal Itani / An-Nisaa (The Women)
4:45But God knows your enemies best. God is sufficient as a Protector, and God is sufficient as a Supporter.
4:55Among them are those who believed in it, and among them are those who held back from it. Hell is a sufficient Inferno.
4:166But God bears witness to what He revealed to you. He revealed it with His knowledge. And the angels bear witness. Though God is a sufficient witness.
4:171O People of the Scripture! Do not exaggerate in your religion, and do not say about God except the truth. The Messiah, Jesus, the son of Mary, is the Messenger of God, and His Word that He conveyed to Mary, and a Spirit from Him. So believe in God and His messengers, and do not say, “Three.” Refrain—it is better for you. God is only one God. Glory be to Him—that He should have a son. To Him belongs everything in the heavens and the earth, and God is a sufficient Protector.
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Those who spend their wealth by night and day, privately and publicly, will receive their reward from their Lord. They have nothing to fear, nor shall they grieve.
The Holy Quran · Al-Baqara (The Cow) · 2:274