The Protection from Evil effect found on the Silver Flame Talisman (Tier 3 upgrade) has been broken for years and does absolutely nothing. All testing shows that the item does not block Greater Command or Dominate Monster cast by evil-aligned casters.
The combat log entry for the Fragment of the Silver Flame lists that you benefit from Protection from Evil as seen in the screenshot below. The combat log entry for the Silver Flame Talisman does not report this. Testing against evil-aligned gnoll casters at Mount Reysalon also proves that the fragment blocks Greater Command. The talisman does not provide any such immunity and I constantly get Greater Commanded.
I submitted a similarly-named bug report with attached screenshot.
Other Protection from Evil items and buffs that are broken in the same way:
* Silver Flame Priest Contact - Silver Flame Purity (buff is supposed to grant Protection From Evil, but has no real effect - bugged)
* Mournlode Chain Shirt (lvl 12, 16, and 20 versions)
Evidence: In the screenshot below, you can see that I have the talisman equipped and my fragment is on my hotbar just below and to the right. I equipped the fragment after the talisman. I then removed the fragment and the combat log reports that I lost the Protection from Evil effect.
Please fix this bug because it's super annoying to me and many others!