My best friends uncle died. What should I say to him?

It is really during these times of grief that I am lost for words to say. I remember when my bestfriend lost her mom, I was overseas then. I couldn't personally be with her so I just gave her a call. When she picked up, It took time before I could say something. I just said I heard what happened. I'm really sorry for your loss and my condolences. I know her mom since childhood so I told her that she will be missed. After that, she started to cry and I wept with her on the other end of the line. But that's it. I just said to her that I pray that she be strong and then we said goodbyes and hang up. No amount of words could really bring back what they've loss or significantly alleviate their feelings, but if you could just be there for your bestfriend to support her or him in his time of grief then I guess it would be enough.