\documentclass[11pt,a4paper,twoside]{book}
\usepackage{pdflscape}
\usepackage{longtable}
\usepackage{rotating}
\RequirePackage{ptext}
\usepackage{ifthen,changepage,afterpage}
\RequirePackage[extrafootnotefeatures,localise]{xepersian}
\usepackage{bidi-longtable}
\settextfont[Scale=1]{XB Niloofar}
\setlatintextfont[Scale=.95]{Times New Roman}
\setdigitfont[Scale=.9]{XB Niloofar}
\defpersianfont\mysmallfont[Scale=.9]{XB Niloofar}
\defpersianfont\chapfont[Scale=3.3]{XB Niloofar}
\defpersianfont\norfont[Scale=1]{XB Niloofar}

\begin{document}
\قسمت{قسمت اول}
\ptext[1-11]
\newcommand{\mytable}{
\begin{longtable}{ccc}
\caption{ddddd} \label{•} \\
\hline
Column 1 & Column 2 & Column 3\\
\hline
%\endfirsthead
%\endhead % all the lines above this will be repeated on every page
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
A & B & C\\
\end{longtable}
}

\afterpage{%
    \clearpage
    \ifodd\value{page}
    %\else% uncomment this else to get odd/even instead of even/odd
        \expandafter\afterpage
    \fi
    {%
    \begin{landscape}\mytable \end{landscape}
    \clearpage
    }%
}

\قسمت{قسمت دوم}

\ptext[1-11]
\ptext[1-11]

\end{document}