You harness the power of unlife to grant yourself a limited ability to avoid death. While this spell is in effect, you gain temporary hit points equal to 1d10 + 1 per caster level (maximum +10).
Source Ultimate Magic
Section 15: Copyright Notice - Pathfinder Roleplaying Game Core Rulebook
False Life, Greater:
Section 15: Copyright Notice - Pathfinder Roleplaying Game Ultimate Magic
Pathfinder Roleplaying Game Ultimate Magic. © 2011, Paizo Publishing, LLC; Authors: Jason Bulmahn, Tim Hitchcock, Colin McComb, Rob McCreary, Jason Nelson, Stephen Radney-MacFarland, Sean K Reynolds, Owen K.C. Stephens, and Russ Taylor.