i would guess something like
*[ˈʊzʊn raˈpaʃt]
although NB that Akkadian (viz. Babylonian) was probably no longer anybody's native language and so the phonetics could be influenced by Aramaic.
(cf. Sumerian 𒄑𒌆𒉿𒂼 ğeštug₂ daĝal, from which, or to which, this phrase might be a calque)