documentclass{scrartcl}

usepackage{graphicx}
usepackage{makecell}


begin{document}
        begin{figure}
              begin{tabular}{ccc}
                        makecell[cc]{line 1 \ line 2 \ line 3 \} & makecell[cc]{includegraphics[width=0.5 textwidth]{example-image-a}\ text below image A} & makecell[cc]{includegraphics[width=0.5 textwidth]{example-image-b}\ text below image b}\
                        makecell[cc]{line 1 \ line 2 \ line 3 \} & makecell[cc]{includegraphics[width=0.5 textwidth]{example-image-a}\ text below image A} & makecell[cc]{includegraphics[width=0.5 textwidth]{example-image-b}\ text below image b}\
                end{tabular}
                caption{caption of the whole figure}
        end{figure}
end{document}

makecell[cc]{vfill line1 \ vfill line2 \ vfill line3\}