I've recently
installed some custom LED lighting. The other night I was sitting in my office during a pretty bad thunderstorm, and when lightning struck, the LED lights in my office actually came on for a second - which is very weird, because they were turned off at the switch!
There's also another fixture in the hallway, which was turned on at the time. It seems that the surge hasn't done any damage - they work just like they did before. It's possible that the transformers I use have built-in surge protection though - I've got the LED drivers built into my walls, and the light switches are just switching 12V.