The word(s) "illa" appears 62 time(s) in 59 verse(s) in Quran in Mohsin Khan translation.

(11) Indeed, We sent Nuh (Noah) to his people and he said: "O my people! Worship Allah! You have no other Ilah (God) but Him. (La ilaha illallah: none has the right to be worshipped but Allah). Certainly, I fear for you the torment of a Great Day!"

(12) And to 'Ad (people, We sent) their brother Hud. He said: "O my people! Worship Allah! You have no other Ilah (God) but Him. (La ilaha illallah: none has the right to be worshipped but Allah). Will you not fear (Allah)?"

(13) And to Thamud (people, We sent) their brother Salih. He said: "O my people! Worship Allah! You have no other Ilah (God) but Him. (La ilaha illallah: none has the right to be worshipped but Allah). Indeed there has come to you a clear sign (the miracle of the coming out of a huge she-camel from the midst of a rock) from your Lord. This she-camel of Allah is a sign unto you; so you leave her to graze in Allah's earth, and touch her not with harm, lest a painful torment should seize you.

(14) And to (the people of) Madyan (Midian), (We sent) their brother Shu'aib. He said: "O my people! Worship Allah! You have no other Ilah (God) but Him. [La ilaha illallah (none has the right to be worshipped but Allah)]." Verily, a clear proof (sign) from your Lord has come unto you; so give full measure and full weight and wrong not men in their things, and do not do mischief on the earth after it has been set in order, that will be better for you, if you are believers.

(15) Say (O Muhammad صلى الله عليه وسلم): "O mankind! Verily, I am sent to you all as the Messenger of Allah - to Whom belongs the dominion of the heavens and the earth. La ilaha illa Huwa (none has the right to be worshipped but He). It is He Who gives life and causes death. So believe in Allah and His Messenger (Muhammad صلى الله عليه وسلم), the Prophet who can neither read nor write (i.e. Muhammad صلى الله عليه وسلم), who believes in Allah and His Words [(this Qur'an), the Taurat (Torah) and the Injeel (Gospel) and also Allah's Word: "Be!" - and he was, i.e. 'Îsa (Jesus) son of Maryam (Mary), عليهما السلام], and follow him so that you may be guided. "

(16) They (Jews and Christians) took their rabbis and their monks to be their lords besides Allah (by obeying them in things which they made lawful or unlawful according to their own desires without being ordered by Allah), and (they also took as their Lord) Messiah, son of Maryam (Mary), while they (Jews and Christians) were commanded [in the Taurat (Torah) and the Injeel (Gospel)] to worship none but One Ilah (God - Allah) La ilaha illa Huwa (none has the right to be worshipped but He) . Praise and glory be to Him (far above is He) from having the partners they associate (with Him)."

(17) But if they turn away, say (O Muhammad صلى الله عليه وسلم): "Allah is sufficient for me. La ilaha illa Huwa (none has the right to be worshipped but He) in Him I put my trust and He is the Lord of the Mighty Throne."

(18) Their way of request therein will be Subhanaka Allahumma (Glory to You, O Allah!) and Salam (peace, safety from evil) will be their greetings therein (Paradise)! and the close of their request will be: Al-Hamdu Lillahi Rabb-il-'Alamin [All the praises and thanks be to Allah, the Lord of 'Alamin (mankind, jinn and all that exists)].

(19) If then they answer you not, know then that it [the Revelation (this Qur'an)] is sent down with the Knowledge of Allah and that La ilaha illa Huwa: (none has the right to be worshipped but He)! Will you then be Muslims (those who submit in Islam)?

(20) Allah is He Who raised the heavens without any pillars that you can see. Then, He rose above (Istawa) the Throne (really in a manner that suits His Majesty). He has subjected the sun and the moon (to continue going round), each running (its course) for a term appointed. He manages and regulates all affairs; He explains the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) in detail, that you may believe with certainty in the meeting with your Lord.