\documentclass[landscape,a4paper]{article}

\usepackage{pdfpages}
\usepackage[bidi=bidi, hebrew, provide=*,english]{babel}
\babelfont{rm}{Arial}
\usepackage{fancyhdr}
\setlength{\footskip}{34pt}

\fancypagestyle{Moreimportedpages2}{%for this MWE <<<<
    \fancyhf{}% Clear header/footer
    \renewcommand{\headrulewidth}{0pt}%
    \renewcommand{\footrulewidth}{0pt}%
    \fancyfoot[C]{%
      \foreignlanguage{hebrew}{\localecounter{letters}{page}}
      \raisebox{-\baselineskip}[30pt][40pt]{\thepage}
    }%
}

\begin{document}

\includepdf[%
  nup=2x1,%  1 row; 2 cols
  pages=-,%
  pagecommand=\thispagestyle{Moreimportedpages2},
]{companion.pdf}

\end{document}