You say it like it’s spelled, if you already know Italian pronunciation. Here is a guide for close approximation:
e is pronounced like we say the “a” in mate
a is pronounced like like the “a” in father
u is pronounced like “oo” in food
i is pronounced like the “ee” in teeth
z is pronounced like the “ts” in fatso
o is like the “o” in tote
double letters are the same pronounciation but you emphasize it, as though you were saying it on the way in and holding it for the way out.
In Italian the penultimate syllable gets the stress unless there is an accent mark, with some exceptions. In this case my intuition says that the “tu” syllable gets a secondary stress.
layt-air-ah-too-reet-tsat-tsee-OH-nay (link to MP3)