The word(s) "guard" appears 249 time(s) in 233 verse(s) in Quran in Muhammad Habib Shakir translation.

(71) A part has He guided aright and (as for another) part, error is justly their due, surely they took the Shaitans for guardians beside Allah, and they think that they are followers of the right

(72) O children of Adam! if there come to you apostles from among you relating to you My communications, then whoever shall guard (against evil) and act aright-- they shall have no fear nor shall they grieve.

(73) What! do you wonder that a reminder has come to you from your Lord through a man from among you, that he might warn you and that you might guard (against evil) and so that mercy may be shown to you?

(74) And to Ad (We sent) their brother Hud. He said: O my people! serve Allah, you have no god other than Him; will you not then guard (against evil)?

(75) And if the people of the towns had believed and guarded (against evil) We would certainly have opened up for them blessings from the heaven and the earth, but they rejected, so We overtook them for what they had earned.

(76) Musa said to his people: Ask help from Allah and be patient; surely the land is Allah's; He causes such of His servants to inherit it as He pleases, and the end is for those who guard (against evil).

(77) And Musa chose out of his people seventy men for Our appointment; so when the earthquake overtook them, he said: My Lord! if Thou hadst pleased, Thou hadst destroyed them before and myself (too); wilt Thou destroy us for what the fools among us have done? It is naught but Thy trial, Thou makest err with it whom Thou pleasest and guidest whom Thou pleasest: Thou art our guardian, therefore forgive us and have mercy on us, and Thou art the best of the forgivers.

(78) And ordain for us good in this world's life and in the hereafter, for surely we turn to Thee. He said: (As for) My chastisement, I will afflict with it whom I please, and My mercy encompasses all things; so I will ordain it (specially) for those who guard (against evil) and pay the poor-rate, and those who believe in Our communications.

(79) And when a party of them said: Why do you admonish a with a severe chastisement? They said: To be free from blame before your Lord, and that haply they may guard (against evil).

(80) Then there came after them an evil posterity who inherited the Book, taking only the frail good of this low life and saying: It will be forgiven us. And if the like good came to them, they would take it (too). Was not a promise taken from them in the Book that they would not speak anything about Allah but the truth, and they have read what is in it; and the abode of the hereafter is better for those who guard (against evil). Do you not then understand?