Kevin Durant was lying down on the floor. More fear than harm since Kevin Durant will resume the game, and even catch fire in the last quarter. Nevertheless, his fall is scary, and it could be much worse.
LeBron James lifts straight arm to ask the referee to stop the match and puts a friendly pat on his buddy.

Here is the video:

http://www.youtube.com/watch?v=TqHeO2qVauQ&feature=player_embedded