\documentclass[12pt]{report}
\usepackage{graphicx}
\usepackage{xepersian}

\begin{document}
\begin{figure}
\begin{center}
\includegraphics[width=13cm,height=8cm]{1.1}
\end{center}
\caption{\scriptsize{ABCDEF}}
\label{fig1.1}
\end{figure}

\end{document}