The word(s) "guard" appears 60 time(s) in 55 verse(s) in Quran in Muhammad Pickthal translation.

(21) O Ye who believe! Choose not for guardians such of those who received the Scripture before you, and of the disbelievers, as make a jest and sport of your religion. But keep your duty to Allah if ye are true believers.

(22) He is the Omnipotent over His slaves. He sendeth guardians over you until, when death cometh unto one of you, Our messengers receive him, and they neglect not.

(23) And guard yourselves against a chastisement which cannot fall exclusively on those of you who are wrong-doers, and know that Allah is severe in punishment.

(24) What (plea) have they that Allah should not punish them, when they debar (His servants) from the Inviolable Place of Worship, though they are not its fitting guardians. Its fitting guardians are those only who keep their duty to Allah. But most of them know not.

(25) And if ye turn away, still I have conveyed unto you that wherewith I was sent unto you, and my Lord will set in place of you a folk other than you. Ye cannot injure Him at all. Lo! my Lord is guardian over all things.

(26) So when they went back to their father they said: O our father! The measure is denied us, so send with us our brother that we may obtain the measure, surely we will guard him well.

(27) He said: Can I entrust him to you save as I entrusted his brother to you aforetime? Allah is better at guarding, and He is the Most Merciful of those who show mercy.

(28) And when they opened their belongings they discovered that their merchandise had been returned to them. They said: O our father! What (more) can we ask? Here is our merchandise returned to us. We shall get provision for our folk and guard our brother, and we shall have the extra measure of a camel (load). This (that we bring now) is a light measure.

(29) Return unto your father and say: O our father! Lo! thy son hath stolen. We testify only to that which we know; we are not guardians of the Unseen.

(30) O my Lord! Thou hast given me (something) of sovereignty and hast taught me (something) of the interpretation of events - Creator of the heavens and the earth! Thou art my Protecting guardian in the world and the Hereafter. Make me to die muslim (unto Thee), and join me to the righteous.