You can mix English and Cyrillic in the same PSPad file without any real issues. Just use a Unicode font that supports both alphabets, switch your keyboard to Cyrillic (or paste the text), and make sure the file is saved in UTF-8 or another Unicode encoding. After that, everything should work normally.
-- <https://forum.pspad.com/read.php?2,79385,79648> PSPad freeware editor https://www.pspad.com
