here is alink for the response which is used only for the third sunday of the great lent:https://soundcloud.com/goha_aswan/ufngdscsljjj
for more information:
1-this response is found in( Tartib el bay3a)
2-the response consists of 3 verses (first is found in manuscript of ELsorian which dates back to1414m..second is found in manuscript of ANBA Antonious monastry1377m...the third is found in manuscript of Elbatriarkia 1160m)
3-there are also unique gospel responses for every sunday of the lent..which can be prayed instead of the general one( je peniot) (or) before it..and they are found in Tartib elbay3a
4- this is an image for the first verse (which may be difficult for some to understand )...but i do not know how to put it here ..if there is anyone who cares please tell how to do so.