What do the Ulema e Deen say about this? Does Namaz become valid behind a Mushrik? Does Namaz become valid behind a person whose holds the concepts of Shirk such as, Rsoolullahi Salallahu Alaihi wa Sallam is the Supplier of Needs (Hajath Rawa), Repeller of Hardships (Mushkil Kusha), Possessor of Occult Science ( Alim ul Ghaib), a radiation (Noor) from the radiation of Allah, and not only Rasoolullahi Sallalahu Alaihi wa Sallam but all the Saints (Aulia) of Allah can repell our difficulties and they indulge in all sort of Innovations (Bid'aths) such as Gyarhawan,Theja, Chaleswan etc etc..
Please write the Urdu translation of the mentioning blessed Ahadees
In the name of Allah, the Beneficent, the Merciful
It is not permissible to performing Salat following a person who carries beliefs as mentioned in the question. It is essential to refrain from such.