No there is no difference. We, Ismailis, are the followers of Batuni Tariqa and as guided by our Tariqa, Pir is the Noor of Muhammad (PBUH & His Family) and Shah is the Noor-e-Imamat (Noor of Allah). Hence reciting Pir Shah, Ya Allah Ya Muhammad, Ya Muhammad Ya Ali or any other name of Allah has no difference. Hope you understand.
Ya Ali Madad!
Is there difference between taking name of Allah and saying PirShah?
No there is no difference. We, Ismailis, are the followers of Batuni Tariqa and as guided by our Tariqa, Pir is the Noor of Muhammad (PBUH & His Family) and Shah is the Noor-e-Imamat (Noor of Allah). Hence reciting Pir Shah, Ya Allah Ya Muhammad, Ya Muhammad Ya Ali or any other name of Allah has no difference.
Hope you understand.