as salam alaikum
the Qur'an says: "Seek your sustenance from Allah and serve Him" (29:17).
It also says: "He (Allah) does not command you to take the angels and prophets as your Lords ("Arbab", plural of "Rabb"). Would He command you disbelief after you have submitted yourselves (to Allah)?".
It follows that an Imam also is not a Rabb and that only Allah is the Cherisher and Sustainer of the whole creation.
With prayers for your success.