<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink">
  <defs>
    <mask id="myMask">
      <rect x="100" y="100" width="100" height="100" fill="white"/>
    </mask>
    <rect x="0" y="0" width="100" height="100" fill="red" id="abc"/>
  </defs>
  <rect x="0" y="0" width="100%" height="100%" fill="lime"/>
  <use  xlink:href="#abc"
        x="100" y="100" mask="url(#myMask)"/>
</svg>