对决 is an intransitive verb （and a noun, see other answers). 1. the common collocations are ( 双方/A 和B）...展开对决 对决的双方是A 和B 2. quite a lot of intransitive verbs can be used as transitive, on very special occasions，usually when used in TITLEs of a program, a book etc. For example, 挑战 is intransitive. Its common construct is 向...发起挑战, but we notice the tv program 挑战主持人. And, if the use is widely accepted and frequently repeated, the transitive use may become a proper use. 对决can be used in the same way.

It's not used frequently actually, at least in daily conversations. “对决” can be translated into "contest". In a 对决, two parties fight against each other to show who's stronger. For instance, we can say “这是两支队伍之间的最后一场对决。” “两个老对手再一次开始了他们的对决。”