The Nigeria forward was on target as the hosts returned to winning ways at the VEB Arena
Chidera Ejuke scored the second goal for CSKA Moscow in their 2-0 triumph over Akhmat Grozny on Saturday.
The effort was the 23-year-old's second goal in the Russian Premier League this season, after he opened his account against Dinamo Moscow a fortnight ago.
Vladislav Yakovlev opened the scoring in the 71st minute and Ejuke doubled the lead for Aleksei Berezutski's side four minutes later.
The Nigeria international was later replaced in the 88th minute by Baktiyor Zainutdinov as CSKA Moscow grabbed their third league win of the season.