ASUNCION (Reuters) - Paraguay's ousted President Fernando Lugo branded the country's new government illegitimate on Sunday and said he would not collaborate with a "false" administration as neighboring countries step up criticism of his rapid impeachment.

Lugo, a mild-mannered former Roman Catholic bishop, said he would back any peaceful effort aimed at restoring institutional order to the soy-exporting nation after Congress voted overwhelmingly to remove him from office on Friday.

(Reporting by Daniela Desantis, Guido Nejamkis and Helen Popper; Editing by Anthony Boadle)