Does Jupiter protect earth?

Yes, Jupiter shields Earth by deflecting comets and asteroids that would otherwise strike us.

Jupiter's powerful gravity can remove comets and asteroids from their orbits, transforming it into the "vacuum cleaner of the solar system."

Its gravity significantly reduces Earth impacts by 90% and is responsible for half of all comets ejected from the solar system, according to 2 studies

It can have a negative impact on Earth by colliding comets and asteroids, as shown 65 million years ago when an asteroid impact wiped off dinosaurs.

Its gravity shields Earth from severe impacts from comet Shoemaker-Levy 9 & asteroid 2012 DA14, likely due to its larger impact craters & proximity.