If your house gets struck by lightning power surges can happen which can travel through your homes electrical wiring and damage any sensitive electronic equipment.
In some cases a fire can even result from a lightning strike and the fire can start from either your electrical system or by some part of your home getting struck by lightning.
Most times a fire will start in your attic from the lightning strike when the lightning hits the roof but can also start by causing a fire on your electrical meter box that could be mounted on your house.
It's best to have power surge protection on electronic equipment and install lightning rods on your house to prevent your home being struck by lightning.