\documentclass[14pt,a4paper]{report}
\usepackage{exscale}
\usepackage{xepersian}
\makeindex
\usepackage{makeidx}
\settextfont{XB Roya}
\begin{flushright}
\pagestyle{headings}
\begin{flushright}
\pagestyle{headings}
\settextfont{XB Roya}
\begin{document}
\title{چکیده}
\maketitle
\end{flushleft} 
\end{document}