You might be interested in Lenin's Imperialism, the Highest Stage of Capitalism, published in 1917 in response to WWI.

After the Anglo-Boer War it was quite natural for this highly honourable caste to exert their main efforts to console the British middle class and the workers who had lost many of their relatives on the battlefields of South Africa and who were obliged to pay higher taxes in order to guarantee still higher profits for the British financiers. And what better consolation could there be than the theory that imperialism is not so bad... IX

and

... finance capital has added the struggle for the sources of raw materials, for the export of capital, for spheres of influence, i.e., for spheres for profitable deals, concessions, monopoly profits and so on, economic territory in general. X

W.E.B. Du Bois publishes an article in Sovremennyi Vostok entitled "Lenin and Africa" in 1959 advocating for Soviet support of African independence, starting from the premise that African tribes are equivalent to the Russian commune. This article is exceptionally fascinating, but more directly to your question Du Bois states that "I do not know of any passage in the writings of Lenin which refer specifically to Africa."

Lenin was thinking about Africa, but more as the West colonized it rather than independence movements. That being said, the Third International was invested heavily in 'world communism,' with the Comintern, composed of European and Asian communist parties. The Third International was most prominent in the years leading up to Lenin's death, and after 1924 becomes less significant. After the failures of various nascent revolutions Stalin turned to "socialism in one country" rather than global communism, and this nationalism would dominate Soviet policy and rhetoric.

The later Soviet Union was quite invested in Africa. Extensive Soviet involvement in the Angolan Civil War in the 1970s and the support of the Ethiopian Derg are probably the highpoints here for Soviet influence in Africa.