וְֽיָצְא֞וּ יֹשְׁבֵ֣י ׀ עָרֵ֣י יִשְׂרָאֵ֗ל וּבִעֲר֡וּ וְ֠הִשִּׂיקוּ בְּנֶ֨שֶׁק וּמָגֵ֤ן וְצִנָּה֙ בְּקֶ֣שֶׁת וּבְחִצִּ֔ים וּבְמַקֵּ֥ל יָ֖ד וּבְרֹ֑מַח וּבִעֲר֥וּ בָהֶ֛ם אֵ֖שׁ שֶׁ֥בַע שָׁנִֽים׃
Und diejenigen, die in den Städten Israels wohnen, werden ausgehen und Feuer aus den Waffen machen und sie als Treibstoff verwenden, sowohl die Schilde als auch die Buckler, die Bögen und Pfeile und die Handstangen und die Speere und sie werden sieben Jahre lang Feuer aus ihnen machen;
Shulchan Arukh, Yoreh De'ah
The use of a Jewish-lit oven is sufficient to qualify bread as "bishul Israel". However, in other types of cooking, the lighting of the fire nor the lit of the oven hold any significance. It is only the actual act of placing the food in the oven that qualifies it as "bishul Israel". Therefore, if one wants to cook in a pan in an oven of non-Jews, it is necessary that the Jew puts the pan in himself, to a place in the oven that is appropriate to cook in. Rema: And there are those that disagree and believe that lighting a fire or stoking the coals in any way with regards to cooking, as with bread, is sufficient, and that is our custom. And even stoking the fire without any particular intentions works. And there are those that say that even if the Jew did not stoke the fire, and did not throw in any wood chips, only that the non-Jew lit the oven from a fire that was lit by a Jew, that is permitted.