False deities have no power to harm or benefit.

Ash-Shirk ul-Akbar takes one outside the fold of Islam. The opposite of Tawhid is expressed by the Arabic term Shirk (polytheism) derived from the root Sh-r-k which conveys the notion of “sharing” or “partnerships.” The word Sharik (plural shurakaa) means “partner” or “associate.” It encompasses far more than the more blatant (obvious) forms of idolatry and denial of Allah’s Unity. The term Shirk means associating partners with Allah, and the related term mushrik is applied to someone guilty of such polytheistic association. Some examples of Shirk ad Du’a (invoking or supplicating to a false deity besides Allah are given. False deities have no power, Allah has all powers.

Say( O Mohammed to mankind) How do you worship besides Allah something which has no power either to harm or benefit you”, (Surah Al-Maidah 5/76)

And do not invoke besides Allah that which neither benefits you nor harms you, for if you did, then indeed you would be of the wrongdoers.’ (Surah Yunus 10/106)

And if Allah should touch you with adversity (hardship), there is no remover of it except Him. And if He touches you with good – then He is over all things competent. (Surah Al-Anam 6/17)

Say, “Shall we invoke instead of Allah that which neither benefits us nor harms us and be turned back on our heels after Allah has guided us?( Surah Al-Anam 6/71)

Should I take other than Him [false] deities [while], if the Most Merciful intends for me some adversity, their intercession will not avail me at all, nor can they save me? (Yasin-36/23)

Did they not see that it could not return to them any speech [i.e., response] and that it did not possess for them any harm or benefit? (Surah Ta-Ha – 20/89)

Say, “Invoke those you have claimed [as gods] besides Him, for they do not possess the [ability for] removal of adversity from you or [for its] transfer [to someone else].”(Al-Israa17/56)

Allah says “That is only Satan who frightens [you] (to fear his Awliyaa) his supporters. So fear them not, but fear Me, if you are [indeed] believers” (Surah Al-i-Imran 3/175)

Say, “Indeed, I do not possess for you [the power of] harm or right direction.” (72/21)

But they have taken besides Him gods which create nothing, while they are created, and possess not for themselves any harm or benefit and possess not [power to cause] death or life or resurrection. (Surah Al-Furqan 25/3)

Narrated Abdullah (RA)The Prophet () said one statement and I said another. The Prophet said, “Whoever dies while still invoking anything other than Allah as a rival to Allah, will enter Hell (Fire).” And I said, “Whoever dies without invoking anything as a rival to Allah, will enter Paradise.”(Bukhari 6/24)