Source: Dungeon Master's Guide
Scroll, Rare
Each Scroll of Protection works against creatures of a specific creature type chosen by the DM or determined by rolling on the following table.
| 1d100 | Creature Type |
|---|---|
| 01-10 | Aberrations |
| 11-15 | Beasts |
| 16-20 | Celestials |
| 21-25 | Constructs |
| 26-35 | Dragons |
| 36-45 | Elementals |
| 46-50 | Humanoids |
| 51-60 | Fey |
| 61-70 | Fiends |
| 71-75 | Giants |
| 76-80 | Monstrosities |
| 81-85 | Oozes |
| 86-90 | Plants |
| 91-00 | Undead |
Using a Magic action to read the scroll creates a 5-foot Emanation originating from you. For 5 minutes, creatures of the specified type can’t enter or affect anything in the area. However, if you move in such a way that a creature of the specified type would be inside the area, the effect ends.
As a Magic action, a creature within 5 feet of the Emanation can attempt to overcome it, which forces the creature to make a DC 15 Charisma saving throw. On a successful save, the creature ceases to be affected by the Emanation.