What is this spell?

[Dorduum]

I could've sworn I remembered seeing a spell... Duration was 1 hr/lvl or until discharged, and it granted a bonus (I think +1 per caster level) to any save. I want to say it was 5th level but I'm not sure. I can't remember what spell list it was on and I can't find the thing anywhere.

Any ideas?

 

[Nail]

Resistance, Greater (SC, Brd 4n Clr 4, Drd 4, p. 174) give a +3 resistance bonus to all saves for 24 hours.

Resistance, Superior is 6th level, and grants a +6 bonus....

 

[Gerion of Mercadia]

Protection from Spells is 8th - and grants a +8 bonus to all saves.

 

[Plane Sailing]

Sounds a lot like Moment of Prescience (8th level, PHB)

Moment of Prescience
Divination
Level: Luck 8, Sor/Wiz 8
Components: V, S
Casting Time: 1 standard action
Range: Personal
Target: You
Duration: 1 hour/level or until discharged

This spell grants you a powerful sixth sense in relation to yourself. Once during the spell’s duration, you may choose to use its effect. This spell grants you an insight bonus equal to your caster level (maximum +25) on any single attack roll, opposed ability or skill check, or saving throw. Alternatively, you can apply the insight bonus to your AC against a single attack (even if flat-footed). Activating the effect doesn’t take an action; you can even activate it on another character’s turn if needed. You must choose to use the moment of prescience before you make the roll it is to modify. Once used, the spell ends.

You can’t have more than one moment of prescience active on you at the same time.