Harassment against my parents by my elder brother, his wife and his son.

Today evening my elder brother suddenly got into the house of my parents, my mother who recently underwent surgery and my father who once used to do agriculture. My brother's family and parents stay in one place but not in one house. My parents stay in the portion which was supposed to be given for rent whereas my brother's family stay at the main place. The house is under my brother's name, which they have cunningly and manipulatively taken away from my father. Today evening my brother with his wife and his son got into the house of my parents and started abusing my father without any mercy he even raised his hand against my mother, whereas his wife too abused my parents and his son snatched away the phone which I have given to them. My father is absolutely desperate here and my mother too is depressed, she recently went through surgery. My parents came to this side of the house after my brother sent off them from the house a decade ago after he got his name on the house. They are constantly engaging in this kind of violence against my parents. They came into the house not once but twice in a single day. They are old souls and only because of them, my brother is where he is today. I'm seeking help from the lawyers here and I'm scared of if they do any physical harm indirectly to my parents. Requesting you to guide me here. My native is Telugu and I'm from Telangana.