翻訳 - 英語 -ヘブライ語 - "Never again"

Explenation to the translator: I do remeber having seen, in Hebrew, the expression "never again" for not having the Shoá repeating. We my poor Hebrew I´m not able to use the right expression. Many thanks, todah rabah.

I would like to have the translation in Hebrew characters and in Hebrew transliteration.