\documentclass{article}
\usepackage{fancyhdr}
\pagestyle{fancy}
\usepackage{xepersian}
\settextfont{XB Zar}
\begin{document}
این یک آزمایش است
\setLTRbibitems
\begin{thebibliography}{99}
\resetlatinfont
\bibitem{1} This is a test as you can see This is a test as you can see This is a test as you can see
\end{thebibliography}
\end{document}