The Enneads -

P. A. Meijer (ed.), Plotinus on the Good or the One (Enneads Vi, 9)

Let me know, and I can provide specific arguments or quotes for that angle.

Address the nature of evil as privation (Ennead I.8 or II.9).

Highlight his lasting influence on Western (Augustine) and Near-Eastern philosophy.

The Six Enneads - Christian Classics Ethereal Library (Translation by MacKenna) Paulos Kalligas's commentary on the Enneads - PhilPapers