Adelaide: Australia spinner Nathan Lyon said his heart skipped a beat when a fearsome Mitchell Johnson bouncer crashed into the helmet of India captain Virat Kohli in the first Adelaide Test on Thursday.

Bowling bouncers has become a sensitive issue following the death of Australian Test batsman Phillip Hughes, after he was fatally struck in the head by a short-pitched delivery in a domestic game late last month. With emotions still raw, there was immediate concern as Kohli ducked into the path of Johnson's menacing rising ball, which thudded into the front of his helmet.