\documentclass{article}
\usepackage{fontspec}
\setmainfont{Aharoni}
\setsansfont[Mapping=tex-text]{AngsanaUPC}
\setmonofont{Arial Black}
\usepackage{xunicode}
\usepackage{polyglossia}
\setdefaultlanguage[variant=british, ordinalmonthday = false]{english}
\setotherlanguage{albanian}
\setotherlanguage[variant=polytonic]{greek}
\setotherlanguage{syriac}
\begin{document}

\part{df}

1 English \textgreek[variant=ancient]{ancient Greek} English
\textgreek[numerals=arabic, variant=ancient]{ancient Greek with Arabic numerals} English

\begin{albanian}%

\part{df}

2 Albanian \textgreek{Greek} Albanian \textsc{smallcaps}

\end{albanian}%
\begin{syriac}%

\part{df}

3 Syriac

\end{syriac}%

%empty language paragraph
\begin{albanian}%
\end{albanian}%

\end{document}
