Did you know a lightning flash can make its surrounding air five times hotter than that of the sun's surface? As you know the temperature of the sun's surface is 6000 degree centigrade, you can imagine the temperature of the surrounded air of a flash. That is why when lightning falls on a object on the earth, it gets entirely damaged. Read more here: https://api.nationalgeographic.com/distribution/public/amp/environment/article/lightning