Translation from english into a phonetic Cantonese "Forces of Evil, Come and Obey."
Chinese slogans typically come in  idiomatic (four characters) phrase
if &quot;Forces of Evil, Come and Obey&quot; means &quot;we are the forces of Evil, come and obey us&quot; then  I suggest:

&quot;道消魔長，順我者昌&quot;
&quot;(the power of) good has declined and (the power of) evil has grown; those who submit to us flourish&quot;

jyutping: /dou2 siu1 mo1 coeng2 seon6 ngo5 ze2 coeng1/
phonetic: &quot;doe siu mor zhung, Shun wu jer chun&quot;
And it rhymes
If &quot;Forces of Evil, Come and Obey&quot; means &quot;you, the forces of evil, come and obey me' then I suggest:

&quot;道長魔消，逆我者亡&quot; (the power of) evil has declined and (the power of) good has grown; those who resist us perish&quot;

jyutping: /dou2 coeng2 mo1 siu1/, /jik6  ngo5 ze2 mong4/
phonetic: &quot;doe zhung mor siu, yiey wu jer mong&quot;