Ronaldo, 38, is included in the squad after former Portugal coach Fernando Santos started with him on the bench for the country's last two games at the World Cup in Qatar, where they were knocked out by Morocco in the quarter-finals.
Belgium coach Roberto Martinez will be looking for a vastly improved performance from his side when they take on a resolute Morocco in their second World Cup Group F fixture at Al Thumama Stadium on Sunday, where victory will seal a round of 16 place.
Belgium coach Roberto Martinez was happy with what he called a deserved 1-0 win over Canada in World Cup Group F on Wednesday despite the "worst technical performance" of his six-year tenure.
Belgium host Wales on March 24 and head to the Czech Republic three days later before entertaining Belarus on March 30.
Belgium, third in the FIFA rankings, go into the World Cup as Group G favourites, facing Tunisia, England and Panama.
Nainggolan ended his international career on Monday after Belgium coach Roberto Martinez left the Roma midfielder out of his squad for next World Cup in Russia.
Radja Naingolan, AS Roma’s midfielder spoke on August 26 about the rumors that spread claiming he will retire from playing international football.