Here's an old list I dug up, probably from my first time through the game. I'd say it holds up all right.

Sage #1
  • Cure/Poisona/Fire
  • Aero/Thunder/Shiva
  • Cura/Telepo/Ramu
  • Silece/Blizzaga/Efreet
  • Cureda/Thundaga/Titan
  • Haste/Degeon/Odin
  • Curega/Quake/Leviathan
  • Araise/Flare/Bahamut
Sage #2
  • Cure/Poisona/Fire
  • Aero/Thunder/Shiva
  • Cura/Telepo/Ramu
  • Silece/Blizzaga/Efreet
  • Cureda/Raise/Erase
  • Haste/Degeon/Odin
  • Curega/Esuna/Leviathan
  • Holy/Araise/Flare