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.
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The Nigeria international was later replaced in the 88th minute by Baktiyor Zainutdinov as CSKA Moscow grabbed their third league win of the season.