A false FIR under section 498a of Indian Penal Code (IPC) may be quashed using the tips to quash false FIR against NRI because that may help the NRI in listing down the grounds for quash.
Once a NRI's 498a is quashed based on falsity or other reasons then that is probably the time to counter the claims of the wife with defamation suit by NRI husband against his wife.
A false 498a/ DV is nothing but a blot / social stigma on the career and character of a NRI.
Any form of defamation must be countered by the NRI husband in the form of a civil defamation suit or a petition for recovery of criminal defamation against the NRI's wife in India.
Get the wife of NRI arrested by filing ARREST WARRANT AGAINST WIFE because once NRI files for ARREST WARRANT AGAINST WIFE then the wife of NRI husband gets sweats day and night as she may be arrested based on genuine irrebuttable and irrefuttable evidences based FIR of NRI which has been duly enforced too with guidance from aturchatur from India.