Step 1: Dribble the ball, plant your weak foot, stop the ball with the inside of your strong foot, turning your body 90 degrees approx
Step 2: turn your body a further 90 degrees approx, perform a ball roll with your strong foot and continue dribbling
Another option to step 2 is:
Step 2: turn your body a further 90 degrees approx, perform a reverse stepover, scoop the ball right and continue dribbling
Cristiano Ronaldo – Cruyff Turn Tutorial Video