Well, someone else mentioned the Sphere of Annihilation, which might count (technically it's not a spell, and the Lerneaen says spells only, but it might work). But otherwise, you're pretty much invincible.
Lereaen doesn't say anything about spells only. Maybe your thinking of Lumi's Body Of Light that says it's immune to magical death effects?
They are probably not the best way to go for invincibility though. Immunity to damage for the most part is easy enough, death effects (all, not just magical) come packaged in a custom legacy item or any number of printed items. With those options +6 LA is way to pricey.
My last tweak to my so called invincible guy at least has offensive options.
TN Kobold Monk 1 / Bard 4 / Crusader 2 / Sandshaper(ss) 1 / Witch Hunter(oa) 1 / Pale Master(lm) 1 / Sublime Chord 1 / Pale Master(lm) +6 / Something 3Way it works out is with Troll-Blooded for regen 1/fire or acid, having a druid cast Mantle Of The Icy Soul (12,250gp) & Mantle Of The Fiery Spirit (27,000gp) perminitly giving it both the fire and cold subtypes making it immune to both, and pale master's 7 level ability of being immune to nonlethal damage. Only acid can hurt it and theres items to help with that.
Grabbing the following items Bracers of Empyreal Armor +6 (64,000gp), Cloak of Resistance +5 (25,000gp), Luckstone (20,000gp), and a +1 Eager Warning Initiative Parry Gauntlet (46,000gp) will give +13 to all saves and witch hunter further gives your casting ability (cha) to saves for another 14ish. Finally, a custom legacy item can give you SR 30 when combined with drazzik's vest, immunity to negative energy and all death effects, freedom of movement, mind blank, nondetection, being flat-footed, etc. Which makes a decent defense, subject to antimagic and disjunction of course. Or is it?
It has 9th level spells and room for Craft Contingency to prevent those pesky disjunction spells from annoying you. Also by inheritance of spellcasting most nonrepeated tricks to build the uber wizard's fortress of invincibility can be done with scrolls. Crusader could be swapped out for Swordsage or Warblade if you feel IHS is needed, but the bard/crusader combo sets up song of the white raven for (dragonfire)inspire buffing.
There is room to UMD a runestaff with Wings of Cover I suppose but it is unneeded. Sand Shaper's rules say you can construct a wall to block which you use to break LoS/LoE in -5 minutes, rounded to the nearest nonnegative equivalence would be a free action. Cheesy, but playing anything in god mode is anyway. Toss on a Ring of Evasion to completely dodge area effects from all but the highest save DCs and you can cast Ruin Delver's Fortune to deal with those.
Theres probably several glaring weaknesses, one of which would be saying "
-5 minutes becomes 0 minutes and blah blah blah that wall takes 59 seconds to build so that don't work" Meh. If they lack the SpC point them to a link online then kill their character before they are born to shut them up before they speak. It's what I'd do.