This scroll requires 1 full round to read if it is to protect against all sorts of demons, including demon princes, 7 segments to protect against demons of Type VI or lower, and only 3 segments to protect against Type III or lower.

The circle of protection generated springs outwards from the scroll reader in a 10 ft. radius. No demon protected against can penetrate the circle physically or magically or in any way, but the person(s) within can launch attacks, if otherwise possible, upon demons. The protection moves with the reader of the scroll. 

Its effect lasts far 5-20 (5d4) rounds.

Note that the protection radius is not an actual physical globe, and if the user forces a demon into a place from which further retreat is impossible (e.g., a corner), and then continues forward until the demon would be within the radius of the circle, the demon is not harmed, and the protection is considered voluntarily broken and disappears. 

There is no way in which this can be used as an offensive weapon.