There are two variations of this ability name in Japanese. The first is エンファイア [enfire], the second エンファイ [enfi].
Final Fantasy XI
Type: White Magic, Category: Enhancing Magic, MP: 12
Learn at: RDM 24
Casting: 3 s, recast: 10 s
Buy: Quelpia/Selbina, Shohrun-Tuhrun/Windurst
Other: Adds Fire damage to your attacks
Other: エンファイア in Japanese
Final Fantasy XIII
Type: Buff, Role: Synergist, ATB Cost: 2
Target: Single, Element: -, Power: -, Fluctuation Margin: -
Base Duration: 180 s, Effect: weak point damage +30%
Learn: Lightning SYN4, Sazh SYN5, Hope SYN8
Effect: Add fire attribute to target's COM, RAV, SEN, or SAB attacks
Other: エンファイ in Japanese
Airborne Brigade

R+
Type: INT, Element: Fire, Growth: Fast, Cost: 14
Attack: 910 (lv1), 3,313 (lv80), 3,600 (lv100), 3,860 (lv120), 4,098 (lv140), 4,320 (lv160)
Defense: 930 (lv1), 3,058 (lv80), 3,313 (lv100), 3,542 (lv120), 3,753 (lv140), 3,950 (lv160)
Place: Pravoka Region (Phantom Forest), Ronka Region (Foggy Ruins)
R
Type: INT, Element: Fire, Growth: Normal, Cost: 10
Attack: 620 (lv1), 2,271 (lv60), 2,690 (lv75), 3,110 (lv90), 3,530 (lv105), 3,950 (lv120)
Defense: 610 (lv1), 2,018 (lv60), 2,376 (lv75), 2,734 (lv90), 3,092 (lv105), 3,450 (lv120)
Place: Pravoka Region (Phantom Forest), Ronka Region (Foggy Ruins)
Pictlogica
Type: Premium Skill, Memento: Wisdom, Speed: Fast
Target: all allies, Element: -, Power: -
Learn: Sazh
Learn cost: Sapphire x3, Memoria Prime, Soul of a Hero, 30,000 gil
Description: Raises the party's Fire element effectiveness by 20%. Effect duration: 2 turns.
Other: エンファイ in Japanese
Category: Ability