\documentclass{report}
\usepackage{fontspec}
\setmonofont{DejaVu Sans Mono}
%\setmonofont[Scale=.9]{DejaVu Sans}
\usepackage{alltt}
\begin{document}
\begin{alltt}

\{u|ā́|i\}

o-ā́o
<Ln:Form spelling='+ونه' script='Arabic'/>
\end{alltt}
\end{document}
