A false atrocity case 3(1)(r)(s)

In october 2017, my wife filed a complaint against 4 people as they were using abusive language with her while entering the society in her car under section 506 and 509 . After her complaint, one of the accused who belongs to sc/st caste put a counter FIR on us under 3(1)(r)(s) and mentioned that we called him UNTOUCHABLE, BITCH which we did not. Now in feb 2018 we got a call from police station that there is an FIR against you and we need to file chargesheet so come and sign the acknowledgment. We went station and signed and also asked for our complaint status which they are not telling us and making excuses. We decided to discuss with lawyers about this matter but few of them are saying anticipatory bail is must from session court and if we don’t get then need to go high court, few of them are saying no need of anticipatory bail we can directly get bail when the chargesheet will be filed in court. I belong to general caste. Our concern is will police arrest us and put behind bars? How can we close this?