Hi there.

PhD English Literature is a doctorate level course henceforth the syllabus is lengthy and the duration of this course could take up to 3 to 5 years. In order to be eligible to do a PhD one has to clear the entrance,  for which syllabus may differ from one university from the other. I am here proving you the link UGC provided syllabus for NET exam, you can use it as reference.

UGC NET SYLLABUS (https://ugc.ac.in/net/syllabus.aspx)