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

(1) And who are more unjust than those who forbid that Allah's Name be glorified and mentioned much (i.e. prayers and invocations, etc.) in Allah's Mosques and strive for their ruin? It was not fitting that such should themselves enter them (Allah's Mosques) except in fear. For them there is disgrace in this world, and they will have a great torment in the Hereafter.

(2) Our Lord! Send amongst them a Messenger of their own (and indeed Allah answered their invocation by sending Muhammad صلى الله عليه وسلم), who shall recite unto them Your Verses and instruct them in the Book (this Qur'an) and Al-Hikmah (full knowledge of the Islamic laws and jurisprudence or wisdom or Prophethood), and purify them. Verily! You are the All-Mighty, the All-Wise."

(3) And when My slaves ask you (O Muhammad صلى الله عليه وسلم) concerning Me, then (answer them), I am indeed near (to them by My Knowledge). I respond to the invocations of the supplicant when he calls on Me (without any mediator or intercessor). So let them obey Me and believe in Me, so that they may be led aright.

(4) It is made lawful for you to have sexual relations with your wives on the night of As-Saum (the fasts). They are Libas [i.e. body cover, or screen, or Sakan, (i.e. you enjoy the pleasure of living with them - as in Verse 7:189) Tafsir At-Tabari ], for you and you are the same for them. Allah knows that you used to deceive yourselves, so He turned to you (accepted your repentance) and forgave you. So now have sexual relations with them and seek that which Allah has ordained for you (offspring), and eat and drink until the white thread (light) of dawn appears to you distinct from the black thread (darkness of night), then complete your Saum (fast) till the nightfall. And do not have sexual relations with them (your wives) while you are in I'tikaf (i.e. confining oneself in a mosque for prayers and invocations leaving the worldly activities) in the mosques. These are the limits (set) by Allah, so approach them not. Thus does Allah make clear His Ayat (proofs, evidence, lessons, signs, revelations, verses, laws, legal and illegal things, Allah's set limits, orders) to mankind that they may become Al-Muttaqun (the pious - See V.2:2).

(5) There is no sin on you if you seek the Bounty of your Lord (during pilgrimage by trading). Then when you leave 'Arafat , remember Allah (by glorifying His Praises, i.e. prayers and invocations) at the Mash'ar-il-Haram . And remember Him (by invoking Allah for all good.) as He has guided you, and verily, you were, before, of those who were astray.

(6) At that time Zakariya (Zachariya) invoked his Lord, saying: "O my Lord! Grant me from You, a good offspring. You are indeed the All-Hearer of invocation."

(7) And of the bedouins there are some who believe in Allah and the Last Day, and look upon what they spend in Allah's Cause as means of nearness to Allah, and a cause of receiving the Messenger's invocations. Indeed these (spendings in Allah's Cause) are a means of nearness for them. Allah will admit them to His Mercy. Certainly Allah is Oft-Forgiving, Most Merciful.

(8) Take Sadaqah (alms) from their wealth in order to purify them and sanctify them with it, and invoke Allah for them. Verily! Your invocations are a source of security for them; and Allah is All-Hearer, All-Knower.

(9) Allah said: "Verily, the invocation of you both is accepted. So you both keep to the Straight Way (i.e. keep on doing good deeds and preaching Allah's Message with patience), and follow not the path of those who know not (the truth i.e. to believe in the Oneness of Allah, and also to believe in the Reward of Allah: Paradise)."

(10) So his Lord answered his invocation and turned away from him their plot. Verily, He is the All-Hearer, the All-Knower.