magic circle v. evil

[nogoodscallywag]

How do the saves work.

A good aligned PC has magic circle v. evil activated. An evil summon wants to penetrate it to attack the PC.

Does the summon have to beat an SR, AND does the PC have to beat the summon's SR to keep it at bay?

["Devil's Advocate"]

If an Evil Summoned creature, (or a Summoned creature from an evil caster) tries to come within 10ft of you, you need to make an SR check against them, IF they have SR. You can not force the ward to try to push the back, as that will automatically break the ward effect, but they can not enter. If you do not overcome the creatures SR, they, (and only they) may enter the area, but you still get the +2 AC ad Save bonuses.

If the summoned creature does not have SR, it simply can not be within 10ft of you. An invisible force field basically keeps it away.