Do you remember what scene in those movies do they say those Lines?
Yes.
The first was when the sharpteeth was attacking Littlefoot and his friends, and his dad was about to get killed by one in LBT10.
The second is when the earthquake is shaking the log in LBT13 and Littlefoot calls for his grandma.
The third is also in LBT13 when the sharpteeth are chasing Littlefoot, his friends and the yellow bellies up to the hanging rock.
Future Land Before Time Movies and/or Episodes.
There aren't and won't be any future movies or episodes. Universal Animations Studios are closed.