The word(s) "defend" appears 9 time(s) in 9 verse(s) in Quran in Saheeh International translation.

(1) And that He might make evident those who are hypocrites. For it was said to them, "Come, fight in the way of Allah or [at least] defend." They said, "If we had known [there would be] fighting, we would have followed you." They were nearer to disbelief that day than to faith, saying with their mouths what was not in their hearts. And Allah is most Knowing of what they conceal -

(2) And there was for him no company to aid him other than Allah, nor could he defend himself.

(3) Or do they have gods to defend them other than Us? They are unable [even] to help themselves, nor can they be protected from Us.

(4) Indeed, Allah defends those who have believed. Indeed, Allah does not like everyone treacherous and ungrateful.

(5) Except those [poets] who believe and do righteous deeds and remember Allah often and defend [the Muslims] after they were wronged. And those who have wronged are going to know to what [kind of] return they will be returned.

(6) And We caused the earth to swallow him and his home. And there was for him no company to aid him other than Allah, nor was he of those who [could] defend themselves.

(7) And those who, when tyranny strikes them, they defend themselves,

(8) And they were unable to arise, nor could they defend themselves.

(9) There will be sent upon you a flame of fire and smoke, and you will not defend yourselves.