Vattimo presents an interesting case, because he has long been an influential Nietzsche scholar, and he has recently recounted his own return to religion, and his attempt to reconcile it with his Nietzscheanism, in terms that are both personal and philosophical.
the philosophical theories of Nietzsche advocating the overcoming of both a threatening nihilism and a slave morality as exemplified for him in historical Christianity through a reevaluation of all values on the basis of a will to power epitomized in his doctrine of the superman and the idea of the eternal recurrence of all things.