Historical algorithm which is frequency analysis resilient
You probably mean the VIC cipher.

It can be set up in a way such that the initial substitution that also achieves fractionation through the use of a so-called straddling checkerboard is followed by a transposition or substitution step. These steps make the distribution of symbols in the cipher text more uniform than in the plain text.

An optional subsequent reverse substitution using the same straddling checkerboard leads to a cipher text that contains only symbols of the original alphabet.