Scroll of Fireball

This text on this worn-down scroll appears unintelligible, but they seem to be for some sort of spell.
Each creature in a 20-foot-radius sphere centered
on that point must make a Dexterity saving
throw. A target takes 8d6 fire damage on a failed
save, or half as much damage on a successful one.
The fire spreads around corners. It ignites
flammable objects in the area that aren’t being
worn or carried.