How to handle landlord entering my flat without permission?

I'm living in Bangalore and my landlord entered my flat without any notice while I was at work. This has happened twice now. He says it's for inspection but hasn’t informed me beforehand. I feel my privacy is being violated. What can I legally do to stop this? Are there any tenant rights I can claim under Karnataka law to prevent him from doing this again? Please help, I am very stressed about my safety and privacy.