The word(s) "treat" appears 29 time(s) in 26 verse(s) in Quran in Mohsin Khan translation.

(11) And make ready against them all you can of power, including steeds of war (tanks, planes, missiles, artillery) to threaten the enemy of Allah and your enemy, and others besides whom, you may not know but whom Allah does know. And whatever you shall spend in the Cause of Allah shall be repaid unto you, and you shall not be treated unjustly.

(12) Verily, those who believed, and emigrated and strove hard and fought with their property and their lives in the Cause of Allah as well as those who gave (them) asylum and help, - these are (all) allies to one another. And as to those who believed but did not emigrate (to you O Muhammad صلى الله عليه وسلم), you owe no duty of protection to them until they emigrate ; but if they seek your help in religion, it is your duty to help them except against a people with whom you have a treaty of mutual alliance; and Allah is the All-Seer of what you do.

(13) Freedom from (all) obligations (is declared) from Allah and His Messenger (صلى الله عليه وسلم) to those of the Mushrikun (polytheists, pagans, idolaters, disbelievers in the Oneness of Allah), with whom you made a treaty.

(14) Except those of the Mushrikun (see V.2:105) with whom you have a treaty, and who have not subsequently failed you in aught, nor have supported anyone against you. So fulfil their treaty to them for the end of their term. Surely Allah loves Al-Mattaqun (the pious - See V.2:2).

(15) Those who fulfil the Covenant of Allah and break not the Mithaq (bond, treaty, covenant).

(16) And the Book (one's Record) will be placed (in the right hand for a believer in the Oneness of Allah, and in the left hand for a disbeliever in the Oneness of Allah), and you will see the Mujrimun (criminals, polytheists, sinners), fearful of that which is (recorded) therein. They will say: "Woe to us! What sort of Book is this that leaves neither a small thing nor a big thing, but has recorded it with numbers!" And they will find all that they did, placed before them, and your Lord treats no one with injustice.

(17) And We send not the Messengers except as givers of glad tidings and warners. But those who disbelieve, dispute with false argument, in order to refute the truth thereby. And they treat My Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), and that with which they are warned, as a jest and mockery!

(18) Until, when he reached the setting place of the sun, he found it setting in a spring of black muddy (or hot) water. And he found near it a people. We (Allah) said (by inspiration): "O Dhul-Qarnain! Either you punish them, or treat them with kindness."

(19) And when they see you (O Muhammad صلى الله عليه وسلم), they treat you only in mockery (saying): "Is this the one whom Allah has sent as a Messenger?

(20) Surely, Shaitan (Satan) is an enemy to you, so take (treat) him as an enemy. He only invites his Hizb (followers) that they may become the dwellers of the blazing Fire.