My best friend is suicidal

Hello, I'd like some advice on this situation please. My best friend is suicidal and he has the means to commit suicide (jumping off a building/bleeding out). He is a teenager and his parents are extremely abusive, but I can't call the police as they aren't citizens and he is afraid they'll get deported. He has been through a lot of other things, and his close friend had also killed herself recently, so I know that his suicide is a very real possibility. (FYI: Our late friend was given much help and care after her first attempt, but she ended up successfully committing suicide very shortly after her first attempt. This kind of solidified my best friend's belief that he can't be helped. It also assured him that death was a viable option to be put out of suffering. RIP) My friend also suffers from physical conditions that make every day hard for them. The counsellor in school can't do much for him as she would tell his parents (as she has before). He can't get much medical help because he’s not a citizen (much more expensive) and his parents won't let him. Currently, he is staying alive for the people around them, me in particular. I am afraid that it'll get too much for him soon and he ends his life. A big part of why he's still here is because I beg him and I'm not prepared to let him go. He also has many friends/ close friends who he talks to. He has lost his will to live and does not show much interest in the future. He's prepared to die and feels contented with the idea. I don't know how to say this, but I am almost prepared to let him go. I know it hurts for him to live, he begs me to let him die, but I refuse. However, I know it's unbearable for him to keep living, and that death is a permanent escape from all his suffering. He says the happy things aren't worth the pain, and it breaks my heart that I understand his reasons. I'm always there for him, and there is not much else I can do. It feels selfish to keep him here because he's hurting so, so much. If after seriously considering the consequences of death, he still wants to end his life, deep down I understand, but I don't want to let him die. Please advise me if possible, I don't want to lose my best friend, but I don't want him to suffer anymore. We are 15 year olds, I might be too young to know what to do. I might call a suicide hotline to ask for help, but I don't know how much they can do.

This is not in the US. Citizens and foreigners here have different expenses & if his parents are found guilty of anything they may lose their resident status. He also doesn’t have any other family here so he can’t live with them. Thank you for your response.