Evocation For Non-christians, How do Pagans do it? Options

So I've recently been reading Summoning Spirits. It's an interesting book, but something that struck me is that the rituals in it are as Jewish as the proverbial Bar Mitzvah.

This begs a couple of questions.

1) How do people who adhere to non-Abrahamic religions perform evocations?
2) Are these rituals intended to imply that Judaism genuinely is "the truth," in a supreme or objective sense, to a greater degree than that of other religious systems?

The roots of much of Judaeo-Christian rituals were in syncretic paganism from the Middle East anyway. Kabbalistic concepts can be clearly seen to derive from Neo-Platonic thought (and not the other way round, despite what some occultists or otherwise ideologically conservative individuals might think), with things like the quadripartite division of the soul, the division of the Divinity into a trinity all found in Greek philosophy, which was unlikely to have been influenced by Hebraic though, considering that the Jews were under Persian rule thousands of kilometers away, freshly returned from exile at the time of Plato; theurgia and goetia are Greek terms, having their place in Neo-Platonic cults, the Emperor Julian even participated in some of them and performed their rituals.

The adoption of all this Hellenistic philosophical concepts was motivated by the temporal superiority of Hellentistic thought around the early centuries before and after the common era in the wake of Greek and thence Roman conquests. Philo was the first to apply these terms to Judaism and afterwards with the conversion of rich gentiles, Christians with an education began applying what they learnt from Hellenistic philosophy to their own religion, simultaneously attempting to attract educated pagans by showing them that Christianity could be more aligned with classical philosophy than the pagan myths.