Sakura: "Are you confident you can catch up to Deidara and the others before Gaara dies?"
Naruto: "As long as we stop them from entering the sealing barrier, it'll be fine."
In the original story, after Gaara was captured and brought to the Land of Rivers, the Akatsuki members used the Phantom Dragons Nine Consuming Seals to extract Shukaku, resulting in his death. To buy time, they had set up a special sealing barrier around the perimeter.
Chapter 155