\documentclass{book}
\usepackage{url}
\usepackage{amssymb}
\usepackage{xepersian}
\usepackage[russian]{babel}
\settextfont[Scale=1.05]{Times New Roman} % XB Niloofar
\setlatintextfont[Scale=1.1]{Times New Roman}
\setdigitfont[Scale=1.01]{Times New Roman} 
\defpersianfont\fnazanin[Scale=1.1]{BNazanin}
\defpersianfont\ftitr[Scale=1.1]{XB Titre}
\begin{document}
\selectlanguage{russian} 
{ \Persian \ftitr درود بر شما  100  بار }

‎\Latin
\flushleft
\noindent А КАК ОБ ЭТОМ? (200 раз)   \\
What about this? (300 times !)
‎\end{document}‎