Behold the power of Google™
https://www.project1999.com/forums/s...ad.php?t=48018
Also from EQ Zam:
According to Lucy, on 12/12/02 this was changed from Disease Resist/Disease Cure to Disease Resist/Damage Shield.
This is another case of the p99 wiki showing a post classic version of things, there is no DS only Zuul