When Pope Benedict XVI announced his resignation on February 11, two separate bolts of lightning struck St Peter’s, which is an extremely large sxtructure that towers over its surroundings. This means that lightning is more likely to hit it than any of the surrounding buildings. The fact that no damage occurred to the basilica suggests that it is quite well protected against lightning.
To get a picture like this you obviously must open the shutter and hope – or pray. You cannot wait until you see the flash and press the shutter release, as you will have missed the event. The trick is to frame the shot and set the camera for a long exposure, then any bolts that appear in the frame will be captured in all their glory.