Enlightenment is a Runeword "PulRalSol" in Diablo 2 Resurrected (D2R). It requires these 3 runes to be inserted into a socketed item in the exact order: Pul + Ral + Sol . The eligible bases for Enlightenment are the following: Body Armors . This is the only Runeword in the game that has X% Chance to cast Level X Blaze when struck attribute.
EnlightenmentEnlightenmentDusk Shroud
Pul · Ral · Sol
Defense: 608
Durability: 20 of 20
Required Strength: 77
Required Level: 49
5% Chance to cast Level 15 Blaze when struck
5% Chance to cast Level 15 Fire Ball on striking
+2 to Sorceress Skill Levels
+1 to Warmth
+30% Enhanced Defense
Fire Resist +30%
Damage Reduced by 7
Socketed (3)
Trade items on d2trader.net

How to obtain Enlightenment

The fastest way to get this item on Battle.net is via trading, you can use the Item Price Checker to see how much Enlightenment is worth.
Another way of getting this Runeword is by farming the runes and the base. Find the drop rates of these items in the Item Database.

Enlightenment bases

The best base for Enlightenment is Dusk Shroud. Below is a list of all eligible 3 socket bases for Enlightenment.