Are you represented by a lawyer in the pending case?
If you don't have any trustable person in India then for every pleading which is required to be filed on your side in court, your lawyer will have to courier the same to you and you have to sign it before the notary public in your present country and send it back to your lawyer
This will be very cumbersome though
If you wish to avoid the above hassle then you can give a POA to your lawyer also
Just dont include power to sell or create third party rights
It would be a special power specific to pursuing the pending litigation
You can also not include a power to settle or compromise on your behalf in that power
If there is any scope for settlement then you can attend it personally so that you get the best deal
Now there could arise a technical issue if the litigating party is also grantor of power to lawyer who is representing the same party in court
In that case your lawyer can withdraw his authority as a lawyer and give NOC for filing of authority by another lawyer
So the litigating party will be represented by a lawyer in capacity of POA holder of former and the party will be represented by another lawyer
The above is only a possibility
Essentially a lawyer acts for the benefit of his client. So I do not see any reason why he also cannot be a POA holder for his client for the specific purpose of the litigation in which his client is a party
But courts are unpredictable, hence the above solution of having another lawyer represent you and your former lawyer can act as your POA holder