Passivity in conversion concerns only the first helps and new strength, not the acts of conversion
The Protestants commonly teach that man is merely passive in his first conversion. They do not mean that the first acts by which a man turns to God, beginning to hate and loathe sin, to love God and to believe and trust him, are not living acts produced by man's faculties and so coming actively from him.
They mean only that God's grace goes ahead of our will, and that our will is merely passive with respect to the first helps by which God begins to move it toward good, and with respect to the new strengths God pours into it freely. Without these it cannot begin or attempt anything good, nor even cooperate with divine grace.
Latin
XXXVIII. Caeterum quamvis passim doceant Protestantes hominem in prima sui conversione mere passive se habere, mens tamen eorum non est primos actus quibus homo ad Deum convertitur, incipiendo peccatum odisse atque detestari, & Deum amare ac illi credere & fidere, non esse actus vitales, a facultatibus hominis elicitos, ac proinde active ab eo procedentes: Sed illud solum sibi volunt, gratiam Dei nostram voluntatem praevenire, & voluntatem nostram mere passive se habere respectu primorum illorum auxiliorum, quibus Deus voluntatem nostram ad bonum movere incipit, & novarum illarum virium quas Deus illi gratuito infundit, & sine quibus nihil boni incipere, vel conari, nec etiam gratiae divinae cooperari potest.