The word(s) "guard" appears 74 time(s) in 69 verse(s) in Quran in Mohsin Khan translation.

(51) Then He completed and finished from their creation (as) seven heavens in two Days and He made in each heaven its affair. And We adorned the nearest (lowest) heaven with lamps (stars) to be an adornment as well as to guard (from the devils by using them as missiles against the devils). Such is the Decree of Him the All-Mighty, the All-Knower.

(52) And as for those who take as Auliya' (guardians, supporters, helpers, lords, gods, protectors) others besides Him [i.e. they take false deities other than Allah as protectors, and they worship them] - Allah is Hafiz (Protector, Watcher) over them (i.e. takes care of their deeds and will recompense them), and you (O Muhammad صلى الله عليه و سلم) are not a Wakil (guardian or a disposer of their affairs) over them (to protect their deeds).

(53) And if Allah had willed, He could have made them one nation, but He admits whom He wills to His Mercy. And the Zalimun (polytheists and wrong-doers) will have neither a Wali (protector or guardian) nor a helper.

(54) Or have they taken (for worship) Auliya' (guardians, supporters, helpers, protectors, lords, gods) besides Him? But Allah - He Alone is the Wali (Lord, God, Protector). And it is He Who gives life to the dead, and He is Able to do all things.

(55) And you cannot escape from Allah (i.e. His punishment) in the earth, and besides Allah you have neither any Wali (guardian or a protector, helper) nor any helper.

(56) And whomsoever Allah sends astray, for him there is no Wali (protector, helper, guardian) after Him. And you will see the Zalimun (polytheists, wrong-doers, oppressors): when they behold the torment, they will say: "Is there any way of return (to the world)?"

(57) And they will have no Auliya' (protectors, helpers, guardians, lords) to help them other than Allah. And he whom Allah sends astray, for him there is no way.

(58) And if those who disbelieve fight against you, they certainly would have turned their backs; then they would have found neither a Wali (protector, guardian) nor a helper.

(59) Hur (beautiful, fair females) guarded in pavilions;

(60) In a Book well-guarded (with Allah in the heaven i.e. Al-Lauh Al-Mahfuz ).