Kinetic Shield (3.5e Feat)
From D&D Wiki
Kinetic Shield [Psychic]
Benefit: On a successful Concentration check (DC 10), you can manifest a shielding force around one arm which allows you to deflect attacks as if wielding an actual shield, giving a +2 shield bonus to AC when fighting unarmed or with a one-handed weapon. This can be wielded without proficiency and does not cause encumbrance or the risk of arcane spell failure. Alternatively, you can reinforce an actual shield or a Shield spell, adding +2 to its shield bonus. It persists for one round per character level. Using this power is a standard action that does not provoke an attack of opportunity.
Note: Related to Psionic Gifts Variant Rule