You can challenge the acquittal order in Sessions court or HC depending on your case

It is necessary to peruse order passed by trial court to advice 

2) file appeal against impugned order 

There is no special privilege for NRI 

You will have to go through the regular channel. Everyone is treated same in Court, whether the residents or non-residents.

Upon seeking legal opinion against the judgment, take appropriate route of revision/appeal/quashing(482).

- You can file Appeal against that judgment of session court before the High Court 

- Yes , you can get privilege being an NRI

Aggrieved by the judgment and being a defacto complainant, you can very well prefer an appeal against the judgment passed by the trial court before the sessions court or if it was a sessions case, then before the high court. 

If the accused was acquitted, then there is no further pursuance of the case by the state, however they are not restricted from preferring an appeal against the impugned judgment. 

But there is no reason for obtaining a stay order when the accused has been acquitted. 

You may have to pursue the appeal properly.

There is no such special privilege or provision in law to provide any special privilege to the NRI complainants, you will also be considered equally at par with the resident Indians. 

Dear client,

Sorry to hear about your situation. You can file a case under Article 226 of Indian Constitution in High Court. 

Hope this helps you.

There special treatment as nri in criminal law. Only your personal presence can be exempted by court 

Yes, you can file complaint under section 256 (3) Cr. P. C. High court does not have power.