Tnzyl-syt-jwlaqy

tnzyl → gma b o (g,m,a,b,o) syt → h b g jwlaqy → q d o z j b

j=10+13=23→w; w=23+13=36-26=10→j; l=12+13=25→y; a=1+13=14→n; q=17+13=30-26=4→d; y=25+13=38-26=12→l → "wj yndl" tnzyl-syt-jwlaqy

Better to run Atbash on each letter without changing order , ignoring hyphens: tnzyl → gma b o (g,m,a,b,o) syt →

tnzyl → lyznt syt → tys jwlaqy → yqalwj tnzyl → gma b o (g

s=19+13=32-26=6→g; y=25+13=38-26=12→l; t=20+13=33-26=7→g → "glg"