The word(s) "ilah" appears 128 time(s) in 105 verse(s) in Quran in Mohsin Khan translation.

(11) Surely, disbelievers are those who said: "Allah is the third of the three (in a Trinity)." But there is no ilah (god) (none who has the right to be worshipped) but One ilah (God -Allah). And if they cease not from what they say, verily, a painful torment will befall on the disbelievers among them.

(12) Allah has not instituted things like Bahirah , or Sa'ibah , or Wasilah , or Ham , (all these animals were liberated in honour of idols as practised by pagan Arabs in the pre-Islamic period). But those who disbelieve invent lies against Allah, and most of them have no understanding.

(13) Say (O Muhammad صلى الله عليه وسلم): "To whom belongs all that is in the heavens and the earth?" Say: "To Allah. He has prescribed Mercy for Himself. Indeed He will gather you together on the Day of Resurrection, about which there is no doubt. Those who have lost themselves will not believe [in Allah as being the only ilah (God), and Muhammad صلى الله عليه وسلم as being one of His Messengers, and in Resurrection].

(14) Say (O Muhammad صلى الله عليه وسلم): "What thing is the most great in witness?" Say: "Allah (the Most Great!) is Witness between me and you; this Qur'an has been revealed to me that I may therewith warn you and whomsoever it may reach. Can you verily bear witness that besides Allah there are other alihah (gods)?" Say "I bear no (such) witness!" Say: "But in truth He (Allah) is the only one ilah (God). And truly I am innocent of what you join in worship with Him."

(15) Those to whom We have given the Scripture (Jews and Christians) recognize him (i.e. Muhammad صلى الله عليه وسلم as a Messenger of Allah, and they also know that there is no ilah (God) but Allah and Islam is Allah's Religion), as they recognize their own sons. Those who have lost (destroyed) themselves will not believe. (Tafsir At-Tabari).

(16) Say (to the disbelievers): "Tell me, if Allah took away your hearing and your sight, and sealed up your hearts, who is there - an ilah (a god) other than Allah who could restore them to you?" See how variously We explain the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.), yet they turn aside.

(17) Such is Allah, your Lord! La ilaha illa Huwa (none has the right to be worshipped but He), the Creator of all things. So worship Him (Alone), and He is the Wakil (Trustee, Disposer of affairs, Guardian) over all things.

(18) Follow what has been revealed to you (O Muhammad صلى الله عليه وسلم) from your Lord, La ilaha illa Huwa (none has the right to be worshipped but He) and turn aside from Al-Mushrikun

(19) 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!"

(20) 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)?"