Mr Bhandarkar will have two policemen in the day and two at night.
The filmmaker has been facing Congress protests against the film, which is said to have characters inspired by Indira Gandhi and her younger son Sanjay Gandhi.
He had cancelled his promotional events in Nagpur and Mumbai over protests by local Congress workers.
In a tweet, he asked Congress Vice President Rahul Gandhi if he approved of hooliganism by his party workers. "Can I have my Freedom of Expression?" he had tweeted.
Congress leader Sanjay Nirupam has demanded that a special screening of the movie be held so they can ensure that the "characters are not shown in a bad light".
Mr Bhandarkar has said the film is "70 per cent fictional".
The Congress has distanced itself from the protests, with senior leader Pawan Khera saying the party has "nothing to do" with them.
The Central Board of Film Certification has suggested 12 cuts and two disclaimers in the film. Mr Bhandarkar had been asked to remove words like RSS and Akali from Indu Sarkar.