The Lions have scored their third try, through George North.
It was created by Leigh Halfpenny, who caught a high ball, beat two Australian tacklers and drew a third, feeding North to finish in the corner.
Halfpenny couldn't add the extras from out wide, but the Lions lead by 18 points.
More top news
A new report has estimated that101,000 carers in Wales are currently supporting loved ones with cancer.
Helen Plint has the latest forecast for Wales.
The Labour conference has voted to give the Welsh party more autonomy, despite opposition from supporters of Jeremy Corbyn.