Newcastle started the match on the front foot and had a flurry of chances to take the lead that went begging. The Magpies had 13 shots in total but failed to find the net again.
Eddie Howe’s side are hoping to reach the final four in the competition for the first time since 1976.
Here are the half-time player ratings from the match...
1. Nick Pope - 7
Was alert to come off his line and clear the danger on several occasions but rarely tested in terms of shots. A seventh consecutive clean sheet. | AFP via Getty Images
2. Kieran Trippier - 8
Brilliant defending to stop Leicester scoring as Patson Daka attempted to square the ball to Harvey Barnes for a tap-in. Posed an attacking threat down the right. | AFP via Getty Images
3. Fabian Schar - 7
Had a couple of lapses of concentration early on but quickly gained his composure and kept Leicester at bay. | AFP via Getty Images
4. Sven Botman - 8
Rarely tested as he remained strong in the air and on the ground. Booked. | Getty Images