Você está se referindo ao episódio 500 Chaves da 22ª temporada, onde Lisa diz:
Get thee behind me, Namuche! That's the Buddhist Satan.
Namuci (às vezes transliterado como Namuche) parece ser outro nome para Mara. De Wiki :
In the Maha Samaya Sutta, the defeated antagonist of the Buddha, Mara also known as Namuci or the "Dark One" is described as a corrupted Asura whose army consisted of "Sensual passions, Discontent, Hunger and Thirst, Craving, Sloth and Drowsiness, Terror, Uncertainty, Hypocrisy and Stubbornness, Gains, Offerings, Fame and Status wrongly gained, and whoever would praise self and disparage others"
Isso é verificado por muitas outras fontes. Da Enciclopédia do Budismo Chinês on-line:
Mara: In theistic religions the Devil, sometimes also known as Satan or Beelzebub, is a being completely opposed to God and to goodness. [...] Mara is sometimes also called Kaõha, the Dark One (Majjhima Nikaya 1. 377), or Namuci (Digha Nikaya 2. 259).