You cannot file a civil suit for challenging the proceeding instituted under the special law or Act. SARFAESI Act is a special Act and it has special jurisdiction to try a class of cases. When the statutory rights have been given to the bank to proceed against the defaulter to recover the NPA, the civil court cannot take cognisance in the suit filed under section 151 cpc.
The secured creditor has the right to approach the DRT for taking possession of the secured assets under the SARFAESI Act. In this situation you should withdraw your suit and file a securitisation application or file a counter affidavit in the Original Application filed by the bank.
When you have an alternative remedy to appear in the original application filed by the bank, there is no need to initiate another proceeding which is nowhere connected with the special law.