Nope. Reread the spell. Level draining undead flat out could not approach within 10 feet.
"Protection From Evil (Abiuration) Reversible
Level: 1
Range: Touch
Duration: 3 rounds/level
Area of Effect: Creature touched
Components: V, S, M
Casting Time: 4 segments
Saving Throw: None
Explanation/Description: When this spell is cast, it acts as if it were a magical armor upon the recipient. The protection encircles the recipient at a one foot distance,
thus preventing bodily contact by creatures of an enchanted or conjured nature such as aerial servants, demons, devils, djinn efreet, elementals, imps, invisible stalkers, night hags, quasits, salamanders, water weirds, wind walkers, and xorn. Summoned animals or monsters are similarly hedged from the protected creature. Furthermore, any and all attacks launched by evil creatures incur a penalty of -2 from dice rolls ”to hit” the protected creature, and any saving throws caused by such attacks are made at +2 on the protected creature‘s dice. This spell can be reversed to become protection from good, although it still keeps out enchanted evil creatures as well. To complete this spell, the cleric must trace a 3’ diameter circle upon the floor (or ground) with holy water for protection from evil, with blood for protection from good - or in the air using burning incense or smoldering dung with respect to evil/good."
There's nothing there about level draining undead at all. Just summoned creatures.
The level 4 version 10' radius similarly lacks such language.
"Explanation/Description: The globe of protection of this spell is identical in all respects to a protection from evil (q.v.) spell, except that it encompasses a much larger area and the duration of the protection from evil, 10'radius spell is greater. To complete this spell, the cleric must trace a circle 20' in diameter using holy water or blood, incense or smouldering dung as according to the protection from evil spell."
Level draining undead only have a -2 to hit. Now maybe the 2e version is different and you are thinking of that. I didn't check.