Is it hit and run if I signal the injured party to follow me into a parking lot but he doesn't come with me?

Hello, today I was standing in front of a roundabout with lots of people around it, which is why I couldn't really see if a car was coming from the left, so I drove carefully into the traffic at about 10-15 km/h. Suddenly a Mercedes came from the left at about 30-40 km/h and swerved into the middle island of traffic. I tried to brake in front of it, but my brakes didn't work properly, so I swerved to the right because I had space there for him to get through. Then he complained, of course, and drove back. There was no external damage to his vehicle, so I stood still with him for a moment, then I waved him to follow me out of the roundabout so as not to impede the flow of traffic any further. I drove slowly out of the next exit at about 10 km/h in first gear, but he didn't follow me and shortly afterwards drove off in a different direction.
Am I committing a hit-and-run or something similar with my actions, and could I be charged with something similar? I tried to clarify the matter with him, because I don't want the person to suffer any damage because of me, either to the car or physically, but he just complained and ignored my request to obey. He also didn't activate his hazard lights.