# wars and riots
Here "wars" probably refers to fighting between countries, and "riots" probably refers to people fighting against their own leaders or against others in their country. Alternate translation: "wars and rebellions" or "wars and revolutions"
# do not be terrified
"do not let these things terrify you" or "do not be afraid"
# the end will not happen immediately
"the end will not happen immediately after those things happen" or "the end will not happen immediately after the wars and riots"
# the end
Possible meanings are "the end of the age" or "the end of the world"