Sakura: "Are you confident you can catch up with Deidara and his partner before Gaara dies?"
Naruto: "As long as I can prevent them from entering the sealing barrier, it will be fine."
In the original story, after Gaara was captured and taken to the Land of Rivers, the members of the Akatsuki 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 on the perimeter.
Chapter 154